J Forensic Sci, Jul. 1979, Vol. 24, No. 3 S. H. Johns, 1M.A. ; A. A. Wist, 2M. S. ; and A. R. Najam, 3M. S. Spot Tests: A Color Chart Reference for Forensic Chemists Spot tests, the most common of preliminary screening tests, have been of long-standing use in forensic analysis. With the advent of technological instrumentation, the importance of this utilitarian, albeit basic, test procedure has diminished. In the early development of currently accepted laboratory technique, the spot test (also referred to as the color test) was often employed as a conclusive method for substance identification. Advanced technology has demonstrated that color tests alone indicate nothing but the possible presence or absence of a particular molecular grouping. Consequently, the color test must be considered inconclusive for purposes of positive identification. Thus the main purpose of the spot test is to narrow the list of substances possibly present in any given unknown. This paper proposes to consolidate the diverse information that has been compiled concerning the color test and to present it in tabular form to foster more effective use of the spot test [1]. Table 1 illustrates a series of nine spot tests applied to each of more than 200 compounds. Although not exhaustive, this table may serve to organize pertinent data and facilitate both manual and computer searches. Each compound has been assigned a numerical code keyed to the specific spot test. Properly applied, the spot test can provide a rapid and highly accurate tool for drug screening. Experimental Procedure The following procedure represents one of the most simple and most direct methods commonly used to perform spot tests. It is both effective and time-efficient. The tests reported herein were conducted by transferring with a capillary tube a small amount of a primary standard drug, dry, to each of nine wells on a porcelain spot plate. A drop of one of the seven solutions, whose formulations are given in the following section, was then deposited in each of the first seven wells (for example, Marquis reagent was placed in the first well, Mecke reagent in the second, and so forth). Concentrated sulfuric acid and concentrated nitric acid were used as the reagents for Wells 8 and 9, respectively. The colors observed during a 5-min period were then recorded in Table 1. Def'mitions and Reagent Formulations The drug standards used for the tests reported in Table 1 were obtained from the sources listed in the Appendix. The number in parentheses after each compound in Table 1 corresponds to the numbered drug source in the Appendix. Received for publication 4 Aug. 1978; revised manuscript received 28 Dec. 1978; accepted for publication 29 Dec. 1978. 1Forensic scientist, Illinois Department of Law Enforcement, Bureau of Scientific Services, Pekin, Ill. 2Forensic scientist, Illinois Department of Law Enforcement, Bureau of Scientific Services, DeSoto, Ill. 3Forensic chemist, U.S. Army Criminal Investigation Laboratory, Ft. Gordon, Ga. 631 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Copyright © 1979 by ASTM International www.astm.org Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. 1--Drug spot tests. TABLE Compound (Source) Aeetaminophen (34) Aeetophenazine maleate (40) Adiphenine hydroehloride (9) Akineton hydrochloride (23) Allobarbitat (3) Mlylisobutylbarbit uric acid (butalbital) (4) ~lphaprodine hydrochloride (41) Marquis ... yellow/brown -- red yellow/orange orange red ~ brown red Alphenal (allylphenylbarbiturie acid) (3) Aminoglutethimide (9) Aminophylline (10) Amisometradine (44) Amitfiptyline hydrochloride (31) Amodiaquin hydroehloride (35) d./-Amphetamine sulfate (22) red -- brown Atropine sulfate (22) Azapetine (41) Barbital (16) red/brown . green yellow d a r k olive blue dark r e d / b r o w n red/brown . . . yellow" ~ olive green . (effervescence) yellow/olive -lime . . blue 9 green ~ blue/ green . . . . . blue brown . . . . . . faint yellow . . . . red/brown ... yellow/brown . . . . Nitric Acid yellow/orange brown -- faint yellow/green . . orange/brown . .. orange-red -brown ... ... ... . . . . . (effervescence) -- r e d / b l a c k violet violet D K 1: g r e e n / brown; D K 2 : violet D K 1 : green olive/green slight yellow developing pale yellow violet violet (fades immediately) blue developing light blue Sulfuric Aeid ... blue (precipitate) blue ... olive brown -brown . ... green -(precipitate) ... green 9 . Freehde's . . violet . olive green -brown olive -- brown . . blue (oil) red -- brown . . . green/brown green . Hydrochloric Acid Plus Ehrlieh's Dille-Koppanyi (DK t/DK2) . . violet developing bright yellow slight yellow developing faint yellow developing orange/brown developing violet -- blue . . developing blue threads orange -brown developing red Mandelin olive green green olive Anisotropine methylbromide 05) Antipyrine (4) Aprobarbital (33) Aspirin Meeke Cobalt Thiocyanate O~ GO faint blue violet yellow ~ orange C 2O Z 3~ I'O -11 O 2O m Z 6o O 03 O [31 Z ('3 m 03 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Benactyzine hydrochloride (1) Benoxinate hydrochlodde (11) Benzilonium bromide (35) Benzocaine (ethyl aminobenzoate) (33) Benzphetamine hydrochloride (50) Benzqninamide (38) Benztroptne mesylate (31) Betametbasone (43) orange -- brown green -- dark blue (effervescence) yellow -- green -- dark blue (effervescence) orange/brown -olive Bromural (bromisovalum) (23) Bufotenine (2) orange -brown (effervescence) developing yellow yellow -- green yellow/orange developing black (effervescence) developing green olive green yellow/orange olive -- dark brown (effervescence) (effervescence) orange/brown yellow -orange yellow - orange orange light brown brown - black/ purple green -- brown/ green yellow/orange orange ~ red/ brown -chocolate Butabarbital (33) Butaeaine sulfate (1) Butalbital (42) Butethal (3) Caffeine (4) Carbinoxamine maleate (28) Carbromal (35) Carisoprodol (53) Carphenazine maleate (56) Chloral betaine (29) Chloral hydrate (30) Chlordiazepoxide hydrochloride (20) Chloromycetin (chloramphenicol) (35) blue (precipitate) blue (oil) blue brown Bethanechol chloride (31) Bromodiphenhydramine hydrochloride (35) yellow/orange green/brown (effervescence) orange ~ olive green and brown orange ~ dark brown/red " yellow -orange -- pink orange -brown yellow/orange yellow (effervescence) blue yellow/green yellow/orange red/brown developing blue blue yellow/green blue (precipitate) yellow -- brown yellow/orange developing brown (effervescence) black (effervescence) yellow -orange yellow -orange red ~ brown yellow/brown brown/blue yellow/brown violet olive -- brown blue (oil) blue (precipitate and oil) brown red brown -- green (developing) green (effervescence) (effervescence) (effervescence) (effervescence) (effervescence) light yellow (effervescence) light yellow (effervescence) yellow -- red/ brown . . . . . . . . faint orange . . red/brown yellow/brown violet . dark brown/black t'- (effervescence) light yellow . developing black spots "l:w O~ m yellow violet violet . yellow -- brown yellow . . . . . . . . . . "13 0 (effervescence) m (eftervescence) light yellow O~ . Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. TABLE 1--Continued. O) 4~ Compound (Source) Marquis Mecke Mandelin Cobalt Dille-Koppanyi Hydrochloric Acid Plus Thiocyanate (DK l/DK2) Ehrlich's Froehde's Sulfuric Acid N i t r i c Acid Chloroproeaine h y d r o c h l o r i d e (37) . C h l o r o t b i a z i d e (31) . Cblorpheniramine maleate (46) . Chlorphentermine h y d r o e h l o r i d e (54) . Cblorpromazine h y d r o c h l o r i d e (46) C h l o r z o x a z o n e (28) Cinehocaine hydroehloride . . . . . . . . . . orange/brown . . . . . . . . . . . . . . . . blue ... . blue . l i g h t yellow O "11 violet faint green "11 O 999 . . . . . m Z Co . O pink C h l o r p r o p a m i d e (38) C b l o r p r o t b i x e n e (41) . red -- green . red - . . . orange . . . . . . . red/orange brown . . . . -. blue . red pink r e d - - yellow red--orange orange orange red orange -- light pink yellow f a i n t yellow yellow orange -brown yellow ... . . red ~ orange red -- orange . . olive ... . . . . . . violet (dibucaine hydrochloride) (9) . . . . . . . . . blue (precipitate) C l i d i n i u m b r o m i d e (45) orange -- deep orange -- brown orange -- deep C l o r a z e p a t e d i p o t a s s i u m (1) C I o r t e r m i n e (52) green -- blue yellow orange -- green yellow . . green ~ blue ... . . . . . C o c a i n e (30) C o c a i n e h y d r o e h l o r i d e (30) C o d e i n e p h o s p h a t e (36) . . . . brown -- C o d e i n e sulfate (36) purple purple blue green bright green -blue green C y e l o m e t h y c a i n e s u l f a t e (26) slight orange slight orange/ olive g r e e n ... . . . . . . . . . . . . . . bright green ~ . . ... ... blue (precipitate) yellow olive blue blue (precipitate) blue green -- blue ... orange olive blue green -- blue ... yellow/orange ... brown Cyclopentamine h y d r o c h l o r i d e (26) C y c f i m i n e h y d r o c h l o r i d e (26) Cyproheptadine hydroebloride (31) D e b r i s o q u i n e s u l f a t e (41) C ~0 Z ~> r'- orange -- red yellow - - b r o w n red/brown ... orange/brown purple -- dark brown orange -brown purple -- dark brown .. . . purple -- dark brown .,. purple ~ dark brown . . blue d a r k p u r p l e -dark brown l i g h t yellow Go (3 m Z (3 m Go Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Deserpidine (1) purple Desipramine (24) Dexamethasone (31) Dexbrompheniramine maleate (43) Diazepam (4) Didrate (dihydrocodeine) (4) Diethylpropion hydrochloride ( a m f e p r a m o n e ) (32) N,N-Diethyltryptamine oxalate (DET) (22) Dimethoxyamphetamine (DMA) (12) N,N-Dimethyltryptamine ( D M T ) (40) Diphenhydramine hydrochloride (4) Dipbenidol hydroehloride (46) Diphenylhydantoin (phenytoin) (4) Droperidol (28) Ephedrine sulfate (33) Ergotamine tartrate (2) Ethinamate (21) Ethionamide (4) Ethylmorphine hydroehloride (4) Ethylnoradrenaline hydrochloride (ethylnorepinephrine) (48) Fenfluramioe hydrochloride (39) Fentanyl citrate (28) 9 dark green dark green light blue purple/blue blue (precipitate a n d oil) . slight violet . . yellow/green . . . green -- o r a n g e / yellow dark blue ... ... ,.. purple blue (oil) green/blue slight green .., .. yellow blue (oil) yellow -- yellow green yellow -- green/ black -brown/green brown yellow/green yellow -- green red/brown yellow ~ green -- brown yellow ~ green brown green/yellow -green -- brown green ~ brown green/blue yellow/orange -- brown orange/brown yellow brown blue (oil) red/brown olive blue ... pink yellow blue (precipitate) very pale yellow very pale yellow light yellow very pale yellow very pale yellow deep b r o w n / yellow 9 yellow/orange yellow/orange .. yellow -- green yellow rose -- b r o w n / violet slight violet ... , .. tan -- brown -- green/black black red red -- brown . . . . . . ... pale yellow olive -- brown faint blue dark green orange yellow red ~ brown light b l u e / g r e e n red red slight green/ yellow purple blue/green green orange brown red/brown olive ,., orange brown slow orange ... .., green purple red/brown orange black blue 9 olive/black ... yellow yellow/orange -IZ 60 I'n -4 I'GO "O O -4 -4 I'D GO -4 GO 03 r Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. TABLE 1--Continued. Compound ISource) F l u r a z e p a m dihydrochloride (41) Furazolidone (14) G l u t e t h i m i d e (4) Haloperidol (28) H a r m a l i n e (22) Marquis Mecke red -- purple . . . dark red . . . Hydroehlorothiazide (46) Hydrocodone b i t a r t r a t e (4) ttydrollazine hydrochlorlde (9) . . . . red -- purple Hydroxyamphetamine hydrobromide (46) Hydro• hydrochloride (38) Hydroxyzine dihydrochloride (38) Hyoscyamine sulfate (46) lbogaiue (12) (effervescence) brown lprindole (56) Isaearboxazid (41) Isoniazid (47) lsopropamide iodide (46) Levorphanol t a r t r a t e (41) Mandelin Dilie-Koppanyi Hydrocblorie Acid plus (DK 1/DK 2) Ehrlicb's Froebde's Sulfuric Acid Nitric Acid C 213 Z I"- developing pink . . orange orange red/brown Heroin hydrochloride (12) Hexobarbital (3) tlexocyclium methylsulfate (1) Hexyleaine hydroehloride (33) H o m a t r o p i n e hydrobromide (27) Indole (13) Cobalt Tblocyanate r ... . . . orange red/brown olive/brown green/blue . . . . yellow -- green . . . . . ... . . . . yellow slight brown . dark blue green . . . . . . . . ... .. slight blue (precipitate) . .. . . . . ... . brown/orange blue (oil) ... . . . . . . . . . . . . deep purple -yellow - green dark oli,~e -~ purple yellow orange/brown green orange slight brown brown ~ black blue (oil) blue pale blue ... ... ... . . . . . . ... purple gray/black brown/yellow green green green olive . . . . . . . . brown brown slight g r a y / b l a c k red/brown . . . . . . . . . . . . . orange . . . orange/bt~wn olive . . bright yellow with ehloric acid . . O "11 . yellow orange . orange/brown orange/brown - . . . rn Z O rrl 03 orange . blue ... rose (precipitate) . . . . . blue (precipitate) black with D K 1 blue -- green (eftervescence) yellow light green yellow pale yellow deep yellow orange green light yellow -brown brown red/brown . . ... brown brown . ... . . yellow . . 9 . . . . . . . purple blue O 33 m 7" O~ f3 yello,~/brown blue violet black (precipitate) . . . . orange . . . purple blue blue . . . violet (effervescence) olive . . olive . . . . green -- blue . . . . . blue (precipitate) . . . . . blue violet . . . . . . . . . . (effervescence) orange/brown . . . slight brown . . . orange green olive/brown . . . . . . . purple/black . .. yellow . red/bro,.~n yellow Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Lysergie acid (4) Lysergic acid diethylamide (LSD) (42) Mazindol (42) Mebutamate (53) Meelizine hydroehloride (38) Mefenamie acid (36) Mepenzolate bromide (24) Meperidine hydrochloride (4) Mephentermine sulfate (56) Meprobamate (4) Mescaline hydroehloride (2) Methadone (7) Methamphetamine hydroehloride (2) dark purple/ black dark blue/black . . . . . . orange orange . . . . . . slight yellow slight yellow yellow dark blue orange -orange -- brown brown --- green green -- blue yellow -... orange -brown orange -... red/brown . . . . . . orange yellow red green/brown orange -brown . .. olive purple olive olive orange orange orange green olive orange -- brown --green slight yellow slight yellow orange/brown orange dark green light yellow slight yellow brown red orange/brown orange orange yellow yellow light yellow yellow light yellow brown/orange purple blue green yellow green -- brown blue light green blue Methaqualone hydrochloride (4) . . . Metharbital (33) Methenamine mandelate (54) Methimazole (26) . . . . yellow/orange ... . . Uethixene hydroehloride (11) Methohexital sodium (33) Methscopolamine bromide (49) Methyclothiazide (1) Methylenedimethoxymethamphetamine ( M D M A ) (12) brown yellow/brown 3,4-Methylenedioxyamphetamine (MDA) (i2) . . . . . yellow . . . slight orange (precipitate) violet , .. yellow brown light blue/green orange/brown yellow/brown orange green D K t : green; D K : : blue violet m . brown yellow blue -- purple -- black green -- dark blue blue -- dark purple -- black yellow/green - - d a r k blue red/purple light yellow purple green -- blue red -- purple green -- olive -- blue purple light yellow yellow/green yellow/brown brown blue violet Methylergonovine maleate (42) Methylphenidate (9) black . . . . blue green -black . . olive -- black violet blue (oil) "I" Z F 0 m 5o 5o O) CO -,q Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. C o m p o u n d (Source) a - M e t h y l t r y p t a m i n e (2) Methyprylon (20) Methysergide rnaleate (42) M o r p h i n e base (36) Morphine hydroehloride (30) Nalorphine (4) Nalorphine hydroehloride (30) Naloxone (53) Naphazoline hydrochloride (9) N i t r a z e p a m (41) Nortriptyline hydrochloride (26) Oetin m u c a t e (isometheptene) (23) O p i u m (30) O x a z e p a m (56) Oxyeodone hydroehloride (15) Oxymetazoline hydrochloride (43) Oxymorphone hydrochloride (15) Oxyphencyclimine hydrochloride (38) Oxyphenonium bromide (9) Papaverine hydrochloride (4) Paramethoxyamphetamine ( P M A ) (12) Peganone (ethotoin) (1) Marquis Mecke blue . . . . . . d a r k blue green purple blue/green red -- purple green purple green purple green red gray/blue d a r k green -brown blue . . . . . . Cobalt Thioeyanate Mandelin green light brown blue/green red/brown olive olive olive olive slight brown olive . . . . . . red/brown light yellow brown -purple yellow yellow ~ purple light yellow green light green . . yellow yellow ~ olive green olive yellow -- green brown brown olive r e d / b r o w n -purple yellow ~ brown black ... orange -brown .. , red orange . . yellow -- brown dark green olive -- brigh~ green olive olive . . (effervescence) lime/green . . . . red/violet . . . purple . blue . . (effervescence) green ~ r e d / brown brown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . blue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . yellow . yellow orange/brow n orange/brown red/orange red/orange yellow . . . ,.. . . yellow yellow/brown yellow . .. yellow yellow green ~ dark blue d a r k blue brown ~ yello~ royal blue -purple yellow orange light yellow green . . dark brown orange . . Nitric Acid red/orange . . . . . . ... . . . . . . . red/brown violet . . yellow . . . . . . blue . . . Sulfuric Acid slight yellow slight yellow . . . . . . . . . . . . purple ... purple ... purple ... purple . .. purple ... brown . . . . . ... .,. ... ... . . Froehde's . . yellow red/brown . Hydrochloric Acid Plus Ehrlieh's DiUe-Koppanyi ( D K 1 / D K 2) light brown ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . blue (precipitate) slight violet blue slight violet ,,, slight violet blue blue red/brown . O~ CO GO 1--Continued. TABLE . . . . . .. ... . . ... . . . . . yellow yellow . . . . . t:D Z > [-O "1] "11 O 20 m Z f.h O~ ['n Z f3 m GO Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Pentazoeine (33) Pentobarbital sodium (22) Pereodan ~ (oxyeodone) (15) Phenaeemide ( 1) Phenaeetln (aeetophenetidin) (4) Phenazocine hydrobromide (4) red -- purple . . . dark pink brown/yellow . . . . . . gray -- dark brown Phencyclidine hydroehloride (PCP) (4) ... purple . . . pale yellow ... . olive . pea/green blue green . .. yellow/orange olive olive ... yellow light yellow light green Phentermine base (37) Phentermine resin (37) Phenylephrine hydrochloride (46) orange orange faint orange . . orange orange/brown green slight yellow slight yellow brown (46) . . . ... red Piperiodolate (24) Piperoeaine hydroehloride (26) Priloeaine hydrochloride (5) Primidone (primaelone) (4) Probeneeid (4) Proeainamide (47) Procaine hydroehloride (3) Prochlorperazine dimaleate . . ... light green . . . . . . . . . . . . . . . . . . . . . . . yellow . . . . . . . . . . . . . . . olive green . . . . . blue blue . . . slight purple yellow/green ... blue blue (oil) . . . . dark green brown olive . . . . orange -orange -- olive yellow -- blue orange pale yellow . . . . . . pink ... ... olive . . . orange purple - black . . . . . . . . . Pipenzolate bromide (24) violet . Phendimetrazine tartrate (6) Phenelzine sulfate (56) Pbenindamine tartrate (41) Pheniramine maleate (22) Phenmetrazine (17) Phenobarbital (27) Phenoxybenzamine hydrochloride (46) Phenylpropanolamine hydrochloride (46) yellow blue ... blue . . . orange ~ brown -- green green orange ~ brown (precipitate) red ~ orange . . . . . . . . orange orange yellow/orange light yellow violet blue green blue brown brown . bright blue .. yellow ... orange -brown blue orange yellow -r 7, .. blue light blue m --4 light blue r- . . blue blue yellow yellow orange red red red. blue Promazine hydrochloride (56) red -- orange green orange -- olive Promethazine hydroehloride (56) pink red -- dark green red/brown -green Co "o 0 -4 pink pink blue green -- red brown light orange red -- brown -yellow yellow -- brown blue red red red - yellow ITI 60 .--t O~ r (D Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. 1--Continued. TABLE O~ O Hydrochloric Compour~d ( S o u r c e ) Marquis Mecke Mandelin Cobalt Dille-Koppanyi Acid P l u s Thiocyanate ( D K 1 / D K 2) Ehrlich's P r o p a n t h e l i n e b r o m i d e (43) green -- blue yellow - - o r a n g e / brown orange/brown blue d-Propoxyphene h y d r o e h l o r i d e (26) purple red/brown brown/purple blue . Protriptyline hydrochloride (31) g r e e n arid b l a c k red/brown olive/brown blue ... Pseudoephedrine h y d r o c h l o r i d e (33) light brown brown ... light green Psilocybin (12) brown green green ... blue Psiloeyn (psilocin) (12) light green -- green dark green/brown blue Q u i n a c r i n e (4) olive yellow -orange -- o r a n g e / g r e e n -green/brown black dark green -green/brown green . rust light green l i g h t yellow clark b l a c k light green olive blue brown blue Q u i n i d i n e g l u e o n a t e (10) Q u i n i n e s u l f a t e (16) R a u w o l f i a s e r p e n t i n a (46) Ravoeaine hydrochloride (propoxycaine h y d r o c h l o r i d e ) (48) R e s e r p i n e (46) yellow . . l i g h t yellow (18) S e c o b a r b i t a l (22) .,. . . S p a r t e i n e sulfate (6) STP (4-methyl-2,5-dimethoxy- . S u l f a d i a z i n e (46) S u l f a e t h y l t b i a d i a z o l e (46) S u l f a m e t h o x a z o l e (41) ... green -- brown . S t r y c h n i n e sulfate (45) . l i g h t yellow brown Salicylamide (55) Scopolamine hydrobromide a m p h e t a m i n e , JB 238) (12) . . . . . . . . . . . . . . . . . . yellow -- g r e e n -- red brown . . . . . . . ... . . . light/yellow . . . . . . . . . . . . . . . . . . . . . . . . . . . yellow/brown yellow/brown purple/brown light pink purple/brown olive/brown . blue . . . . . . . . . purple -- red/ . . . violet -- o r a n g e brown . (precipitate) . . . . brown ... . . . C 2O Z r- . . . . . . . . . . olive g r e e n yellow -orange l i g h t yellow black l i g h t yellow dark brown blue green . . (precipitate) . . . . . . . . . . . . . . . . . orange/brown yellow l i g h t yellow green -- red brown yellow/green green particles yellow . . yellow/green . yellow . . . . yellow ... violet violet yellow yellow ... ... t'3 m Z t') m O'J m . . . "11 O 20 m Z r O , .. . . orange ... . . . . . . . . . brown/yellow . yellow/green . N i t r i c Acid green yellow . . . . . violet . . light brown blue yellow/green . yellow . . . g r e e n -- p u r p l e ... . . . . olive/brown . . purple . . . pale yellow - - . . . . yellow olive g r e e n . . .., b l u e -- g r e e n yellow . . . yellow/brown Sulfiaric A c i d tD "11 ... . .. Froehde~s Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Sulfamethoxydiazine (39) Sulfapyridine (4) Tandearil (oxyphenbutazone) (9) Tegretol (carbamazepine) (9) Tetracycline hydrochloride (45) Tetrahydrozoline hydrochloride (38) Thebaine (4) Theophylline (22) Thiabendazole (31) Thiophene analog of PCP (TCP) (12) Thiopropazate hydrochloride (44) Thioridazine hydrochloride (31) Thiothixene (38) Tofranil (imipramine) (9) Tranylcyprornine sulfate (46) Trifluoperazine dihydroehloride (46) Trimeprazine tartrate (46) Trimethadione (1) Trimethaphan eamsylate (41) Trimethoxyamphetamine (TMA) (12) Trimipramine maleate (21) Tripelennamine hydrochloride (28) Tryptamine hydrochloride (13) Tuaminoheptane sulfate (26) Tybamate (53) ... ... ... brown spots light brown yellow yellow orange/brown olive light green light yellow red ~ yellow black -- green/ black red light blue orange red/brown ... ... green/brown brown green red/brown blue blue light yellow gray yellow ~ dark green ~ blue green pink green yellow blue brown orange/brown yellow violet green/blue purple (effervescence) (effervescence) orange orange ... red/brown light green/blue red/green blue pink red pink yellow dark brown/green blue light green dark purple green/blue red/purple light orange orange orange red brown orange orange pink brown/yellow brown/yellow orange brown blue orange -- green orange -- olive blue blue light orange pink ... green/blue orange -- green red ~ olive green orange lime green -brown green light blue olive/green brown ~ red/ brown brown brown yellow ... ... red/brown light green light brown ... yellow yellow I Z blue m brown/green r- light brown blue (oil) pale blue olive green pale yellow violet light green light yellow -D 0 yellow m -4 O~ _.t 642 JOURNALOF FORENSIC SCIENCES For the Marquis reagent [2-8], add eight to ten drops of 40% formaldehyde solution to 10 ml of concentrated sulfuric acid. For the Mecke reagent [2,5-8], dissolve 0.25 g of selenious acid in 25 ml of concentrated sulfuric acid. For the Mandelin reagent [2,4,6-8], dissolve 1 g of ammonium vanadate in 100 ml of concentrated sulfuric acid. For the cobalt thiocyanate reagent [2-4, 7], dissolve 2 g of cobalt thiocyanate in 100 ml of methanol. The Dille-Koppanyi reagent [2-4, 7] consists of two solutions. For the first, dissolve 0.1 g of cobaltous acetate in 100 ml of methanol, and for the second, add 5 ml of isopropylamine to 95 ml of methanol. For the Ehrlich's reagent [5], add 5 g of p-dimethylaminobenzaldehyde to 100 ml concentrated hydrochloric acid. For the Froehde's reagent [2, 6-8], dissolve 50 mg of sodium molybdate in 10 ml of hot concentrated sulfuric acid. These seven reagents were chosen for the following reasons: 1. They are effective in detecting drugs in the major groups of interest to the forensic chemist (such as narcotics, stimulants, barbiturates, and hallucinogens). 2. The reagents, though selective, are not so specific that they will react with only a very few given compounds. 3. If the class of compounds with which a given reagent would react was very large (such as narcotics), several different reagents were chosen for that class, with the expectation that each reagent would produce a different color in reaction with a given drug. The object was to collect as many different data points as possible for each drug. 4. The Marquis, Mecke, Mandelin, and Froehde's reagents each contain sulfuric acid as the solvent. Since a multitude of reactions (such as esterification, oxidation, dehydration, and hydrolysis) are fostered by sulfuric acid, this solvent was chosen as one of the nine reagents [5]. By using sulfuric acid as a control, the behavior of a given substance in the acid was determinable. One drop of concentrated hydrochloric acid preceded the addition of the Ehrlich's reagent to each sampte for the same reason, that is, as a control. Nitric acid, which is not used as a solvent in any of the given reagents, was chosen as a third acid control. Color-Coded Directories For wider application and easy reference, the color test chart (Table 1) is numerically coded. Each color is assigned a digit according to the following key: Digit 1 2 3 4 5 6 7 8 9 0 Color red orange yellow green blue violet purple brown black no reaction Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. JOHNS ET AL ~ SPOT TESTS 643 The digit assigned is based on the final color obtained after 5 min regardless of the color transitions that the reaction may have undergone. The order of the nine digits in the color code for a drug corresponds to the order in which the tests were performed and listed in Table 1. As an example, the coding of d,/-amphetamine sulfate is shown below: Marquis Mecke Mandelin cobalt thiocyanate Dille-Koppanyi Ehrlich's Froehde's sulfuric acid nitric acid orange-brown ... green ... ... ... ... ... ... 8 0 4 0 0 0 0 0 0 There is always a certain amount of subjectivity that must be taken into account when a color is reported. It is not uncommon for two analysts to describe the same color differently. Aside from the differences in reporting colors that can be attributed to the analysts, colors can also be influenced by the concentration of the solvent or solute or by the presence of contaminants. Also, the length of time during which the colors are observed may influence the color reported because color transitions and instabilities are not unusual. Allowances should therefore be made for these differences, especially with street samples, where neither the concentration of the drug nor the presence or composition of any contaminant is known [8]. Two coded directories have been included in this paper. Table 2 presents the drugs arranged alphabetically, whereas Table 3 lists them according to numerical code. Table 3 is useful in obtaining information about what compounds give similar color reactions. Since the coded colors do not reflect color transitions, it is possible for two identically coded drugs to be distinguished by reference to the spot test results in Table 1. Being that subjectivity is inherent in the color reported, subjectivity also exists in the numerical codes. When any of the tables are used, alternatives should be considered. TABLE 2--Alphabetically arranged drugs with color codes. Drug Acetaminophen Acetophenazine Adiphenine Akineton Allobarbital Allylisobutylbarbiturieacid Alphaprodine AIphenal Aminoglutethimide AminophyUine Amisometradine Amitriptyline Amodiaquin d,/-Amphetamine Anisotropine Antipyrine Aprobarbital Aspirin Atropine Code 004000502 184400884 239500300 888000880 000060000 000060000 144500900 000060000 000060000 000860000 000000000 888500080 048440402 804000000 030500300 034500030 000060000 104060000 000500000 Drug Azapetine Barbital Benactyzine Benoxinate Benzilonium Benzoeaine Benzphetamine Benzquinamide Benztropine Betamethasone Bethaneehol Bromodiphenhydramine Bromural Bufotenine Butabarbital Butaeaine Butalbital Butethal Caffeine Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Code 508550000 000060000 588500810 000500008 548500823 008003000 834500000 044500408 222500220 898000880 008004909 222500220 000000000 874005889 000060000 008503000 000060000 000060000 000000000 644 JOURNAL OF FORENSIC SCIENCES TABLE 2--Continued. Drug Carbinoxamine Carbromal Carisoprodol Carphenazine Chloral betaine Chloral hydrate Chlordiazepoxide Chloromycetin Chloroprocaine Chlorothiazide Chlorpheniraminr Chlorphentermine Chlorpromazine Chlorpropamide Chlorprothixene Chlorzoxazone Cinehocaine Clidinium Clorazepate C]ortermine Cocaine Codeine phosphate Codeine sulfate Cyclomethycaine Cyclopentamine Cycrimine Cyproheptadine Debrisoquine Deserpidine Desipramine Dexamethasone Dexbrompheniramine Diazepam Didrate Diethylpropion N,N-Diethyltrypramine (DET) Dimethoxyamphetamine (DMA) N,N-Dimethyltryptamine (DMT) Diphenhydramine Diphenidol Diphenylhydantoin Droperidol Ephedrine Ergotamine Ethinamate Ethionamide Ethylmorphine Ethylnoradrenaline Fenfluramine Fentanyl Flurazepam Furazolidone Glutethimide Haloperidol Harmaline Heroin Code 000500000 000000000 000000000 814400880 000000000 000060000 338000330 002000000 002503000 000060000 000500000 004000000 148500113 000000000 222002221 004060000 000500000 545000813 330503333 200000000 000500000 744500502 744500502 284000000 000000000 188000800 888000883 800500000 744000543 050560005 000000000 000500000 000000000 754500303 000500000 448501333 488000000 888507333 838500220 884000430 000060003 108000000 000500000 994007238 188000110 004080002 744000300 884090932 020500000 804000000 108500000 000000000 222560223 284000000 888003488 754000780 Drug Code Hexobarbital 000060000 Hexocyclium 145500200 Hexyleaine 000500000 Homatropine 038500003 Hydrochlorothiazide 004060000 Hydrocodone 750000000 Hydrollazine 002990000 Hydroxyamphetamine 884000403 Hydroxyzine 003500000 Hyoscyamine 008500000 Ibogaine 479504333 Indole 848002488 Iprindole 003500083 Isoearboxazid 004080000 Isoniazid 084183000 Isopropamide 784000798 Levorphanol 994500503 Lysergie acid 994007442 Lysergie acid diethylamide (LSD) 000007000 Mazindol 222000220 Mebutamate 000000000 Meclizine 334000330 M e f e n a m iacid c 354000004 Mepenzolate 548000823 Meperdine 800500000 Mephentermine 804000000 Meprobamate 000003000 Mescaline 288000331 Methadone 105500000 Methamphetamine 804500000 Methaqualone 002000000 Metharbital 000060000 Methenamine 208000000 Methimazole 034050000 Methixene 882000822 Methohexital 884060000 Methscopolamine 000500333 Methyelothiazide 383060330 Methylenedimethoxymethamphetine (MDMA) 959000573 Methylenedioxyamphetamine (MDA) 757000573 Methylergonovine 999006488 Methylphenidate 000500000 c~-Methyltryptamine 458806338 Methyprylon 004000000 Methysergide 548007003 Morphine 744000708 Nalorphine 744560702 Nalorphine hydrochloride 744560702 Naloxone 158060703 Naphazoline 584550800 Nitrazepam 000030000 Nortriptyline 888500820 Oetin 334000000 Opium 840000733 Oxazepam 334003333 Oxyeodone 744000803 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. JOHNS ET AL 9 SPOT TESTS 645 TABLE 2--Continued. Drug Oxymetazoline Oxymorphone Oxyphencyclimine Oxyphenonium Papaverine Paramethoxyamphetamine (PMA) Peganone Pentazocine Pentobarbital Percodan Phenacemide Phenacetin Phenazocine Phencyclidine (PCP) Phendimetrazine Phenelzine Phenindamine Pheniramine Phenmetrazine Phenobarbital Phenoxybenzamine Phentermine base Phentermine resin Phenylephrine Phenylpropanolamine Pipenzolate Piperidolate Piperocaine Prilocaine Primidone Probenecid Procainamide Procaine Prochlorperazine Promazine Promethazine Propantheline d-Propoxyphene Protriptyline Pseudoephedrine Psilocybin Psilocyn Code Drug Code 884500553 789060732 824000020 084500303 144000403 Quinacrine Quinidine Quinine Rauwolfia serpentina Ravocaine Reserpine Salicylamide Scopolamine Secobarbital Sparteine STP (4-methyl-2,5-dimethoxyamphetamine) Strychnine Sulfadiazine Sulfaethylthiadiazole Sulfamethoxazole Sulfamethoxydiazine Sulfapyridine Tandearil Tegretol Tetracycline Tetrahydrozoline Thebaine Theophylline Thiabendazole Thiophene analog of PCP (TCP) Thiopropazate Thioridazine Thiothixene Tofranil Tranylcypromine Trifluoperazine Trimeprazine Trimethadione Trimethaphan Trimethoxyamphetamine (TMA) Trimipramine Tripelennamine Tryptamine Tuaminoheptane Tybamate 388433423 004000000 334500330 894000933 308503003 844008438 008000000 030500300 000060000 000500000 048000000 008003000 774000503 000560000 134000000 204000000 004000002 844000003 020500000 000500000 204000700 944500423 000500000 000000000 000060000 148500400 224500880 200000000 284000503 338000000 554500823 834000000 008500000 132550000 000000000 000000000 002503000 002503000 111502113 244500828 144500113 588508883 787500810 988503882 808400000 844057400 494507000 TABLE 3--Numerically arranged color code directory. Code 000000000 000000000 000000000 000000000 000000000 000000000 000000000 000000000 Drug Amisometradine Bromural Caffeine Carbromal Carisoprodol Chloral betaine Chlorpropamide Cyclopentamine Code 000000000 000000000 000000000 000000000 000000000 000000000 000000000 000000000 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Drug Dexamethasone Diazepara Furazolidone Mebutamate Phenmetrazine Primidone Probenecid Thiabendazole 844000444 002000000 008003000 000063000 008063000 008003000 000003000 808000403 084000303 391503000 284550000 888500883 000060000 000000000 440000000 144501113 574504757 222002221 008500005 805000000 244500823 144500213 000000000 500500000 244000000 054008005 888505430 384006433 008000000 000000000 646 JOURNAL OF FORENSIC SCIENCES TABLE 3--Continued. Code 000000000 000000000 000003000 000003000 000007000 000030000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060000 000060003 000063000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500000 000500008 000500333 000560000 000860000 002000000 002000000 002000000 002500000 002503000 002503000 002503000 002990000 003500083 004000000 004000000 004000000 004000002 004000502 004060000 004060000 004080000 Drug Trimethadione Tybamate Meprobamate Sulfapyridine Lysergicacid diethylamide (LSD) Nitrazepam Allobarbital Alphenal Allylisobutylbarbituric acid Aminoglutethimide Aprobarbital Barbital Butabarbital Butalbital Butethal Chloral hydrate Chlorothiazide Hexobarbital Metharbital Phenobarbital Secobarbital Theophylline Diphenylhydantoin Sulfaethylthiadiazole Atropine Carbinoxamine Chlorpheniramine Cinchocaine Cocaine Dexbrompheniramine Diethylpropion Ephedrine Hexylcaine Methylphenidate Phendimetrazine Pheniramine Sparteine Benoxinate Methscopolamine Pentobarbital Aminophylline Chloromycetin Methaqualone Strychnine Hydroxyzine Chloroprocaine hydrochloride Procaine Procainamide Hydrollazine Iprindole Chlorphentermine Methyprylon Quinidine Phenacetin Acetaminophen Chlorzoxazone Hydrochlorothiazide Isocarboxazid Code 004080002 008000000 008000000 008003000 008003000 008003000 008003000 008004909 008063000 008500000 008500000 008500005 008503000 020500000 030500000 030500300 030500300 034050000 034500030 038500003 044500408 048000000 048440402 050560005 054008005 084000303 084183000 084500303 104060000 105500000 108000000 108500000 111502113 132550000 134000000 144000403 144500113 144500213 144500900 144501113 145500200 148500113 148500400 158060703 184400884 188000110 188000800 200000000 200000000 204000000 204000700 208000000 222000220 222002221 222002221 222500220 222500220 222560223 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Drug Ethionamide Salieylamide Tuaminoheptane Benzocaine Peganone Sulfadiazine Sulfamethoxydiazine Bethanecbol Sulfamethoxazole Hyoscyamine Piperocaine Tofranil Butacaine Fenfluramine Phencyclidine (PCP) Anisotropine Scopolamine Methimazole Antipyrine Homatropine Benzquinamide Paramethoxyamphetamine (PMA) Amodiaquin Desipramine Trimipramine Tegretol Isoniazid Oxyphenonium Aspirin Methadone Droperidol Flurazepam Prochlorperazine Prilocaine Percodan Papaverine Promethazine Trimeprazine Alphaprodine Thiopropazate Hexocyelium Chlorpromazine Phenoxybenzamine Naloxone Acetophenazine Ethinamate Cyerimine Clortermine Phentermine resin Phenacemide Phenelzine Methenamine Mazindol Chlorprothixene Thiothixene Benztropine Bromodiphenhydramine Glutethimide JOHNS ET AL * SPOT TESTS 647 TABLE 3--Continued. Code 224500880 239500300 244000000 244500823 244500828 284000000 284000000 284000503 284550000 288000331 308503003 330503333 334000000 334000330 334003333 334500330 338000000 338000330 354000004 383060330 384006433 388433423 391503000 448501333 458806338 479504333 488000000 494507000 500500000 508550000 544500823 545000813 548500823 548000823 548007003 574504757 584550800 588500810 588508883 744000300 744000543 744000708 744000803 744500502 744560702 750000000 754000780 754500303 Drug Phentermine base Adiphenine Trimethoxyamphetamine (TMA) Trifluoperazine Promazine Cyclomethycaine Haloperidol Phenylephrine Tetrahydrozoline Mescaline Ravocaine Clorazepate Octin Meclizine Oxazepam Quinine sulfate Phenylpropanolamine Chlordiazepoxide Mefenamicacid Methyelothiazide Tryptamine Quinacrine Tetracycline N, N-Diethyltryptamine (DET) a-Methyltryptamine Ibogaine Dimethoxyamphetamine (DMA) Psilocyn Trimethaphan camsylate Azapetine Pipenzolate Clidinium Benzilonium Mepenzolate Methysergide Thioridazine Naphazoline Benaetyzine Propantheline Ethylmorphine Deserpidine Morphine Oxyeodone Codeinephosphate Nalorphine hydrochloride Hydrocodone Heroin Didrate Code 757000573 774000503 784000798 787500810 789060732 800500000 800500000 804000000 804000000 804000000 804500000 805000000 808000403 808040000 814400880 824000020 834000000 834500000 838500220 840000733 844000003 844000444 844008438 844057400 848002488 874005889 882000822 884000403 884000430 884060000 884090932 884500553 888000880 888000883 888003488 888500080 888500820 888500883 888505430 888507333 894000933 898000880 944500423 959000573 988503882 994007238 994007442 994500503 999006488 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. Drug Methylenedioxyamphetamine (MDA) Pentazocine Isopropamide d-Propoxyphene Oxymorphone Debrisoquine Meperidine d,/-Amphetamine Fentanyl Mephentermine Methamphetamine Tranylcypromine Tandearil Pseudoephedrine Carphenazine Oxyphencyclimine Piperidolate Benzphetamine Diphenhydramine Opium Phenazocine STP (4-methyl-2,5-dimethoxyamphetamine) Reserpine Psilocybin Indole Bufotenine Methixene Hydroxyamphetamine Diphenidol Methohexital Ethylnoradrenaline Oxymetazoline Akineton Cyproheptadine Harmaline Amitriptyline Nortriptyline Thebaine Tripelennamine Dimethyltryptamine (DMT) Rauwolfiaserpentina Betamethasone Phenindamine Methylenedimethoxymethamphetamine (MDMA) Protriptyline Ergotamine Lysergieacid Levorphanol Methylergonovine 648 JOURNALOF FORENSIC SCIENCES Summary The results of nine different color tests were recorded for each of more than 200 drugs. The drugs included in the study consisted of those most commonly encountered in forensic chemistry. The formulations for the different test reagents used are given along with their references. The data from the spot tests are organized in tables by assigning a numerical digit for each color test result. APPENDIX Drug Sources (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) Abbott Laboratories Aldrich Chemical Co. Analabs, Inc. Applied Science Laboratories, Inc. Astra Pharmaceutical Products, Inc. Ayerst Laboratories Brinkmann Instruments, Inc. California Toxicology Service, Inc. CIBA Pharmaceutical Co. Cooper Laboratories, Inc. Dorsey Laboratories Drug Enforcement Administration Eastman Organic Chemicals Eaton Laboratories Endo Laboratories, Inc. Fisher Scientific Co. Geigy Pharmaceuticals Gilman Laboratories Hoechst Pharmaceutical Co. Hoffman-LaRoche, Inc. Ives Laboratories, Inc. K & K Laboratories, Inc. Knoll Pharmaceutical Co. Lakeside Laboratories, Inc. Lederle Laboratories Eli Lilly and Co. Malliekrodt, Inc. McNeil Laboratories (29) (30) (31) (32) (33) (34) (35) (36) (37) (38) (39) (40) (41) (42) (43) (44) (45) (46) (47) (48) (49) (50) (51) (52) (53) (54) (55) (56) Mead Johnson Laboratories Merck & Co., Inc. Merck Sharp & Dohme Merrell-National Laboratories, Inc. National Formulary Norwich Pharmaceutical Co. Parke-Davis & Co. S. D. Penick & Co. Pennwalt Pharmaceutical Div. Pfizer Laboratories A. H. Robins Co. Regis Roche Laboratories Sandoz Laboratories Schering Corp. G. D. Searle & Co. Sigma Smith Kline & French Laboratories E. R. Squibb & Sons Sterling-Winthrop Supelco The Upjohn Company U. S. Pharmacopeia USV Pharmaceutical Corp. Wallace Laboratories Warner-Lambert Warren-Teed Pharmaceuticals, Inc. Wyeth Laboratories References [1] Gonzales, T. A., Vance, M., Helpern, M., and Umberger, C., Legal Medicine Pathology and Toxicology, 2nd ed., Appleton-Century-Crofts, New York, 1954, pp. 1298-1311. [2] Butler, W. P., in Methods of Analysis, A. P. Mathers, Ed., Internal Revenue Service, U.S. Government Printing Office 0-410-684, Washington, D.C., 1970, pp. 106, 136, 137. [3] Clarke, E. G. C., Isolation and Identification of Drugs, Pharmaceutical Press, London, 1971, pp. 123-134, 798-809. [4] Clarke, E. G. C., Isolation and Identification of Drugs. Vol. 2, Pharmaceutical Press, London, 1975, pp. 1176-1188. [5] Feigl, F., Spot Tests in Organic Analysis, Elsevier, New York, 1960, pp. 136-140, 381,382. [6] Fulton, C. C., Modern Microcrystal Tests for Drugs, Wiley-Interscience, New York, 1969, pp. 335-339. Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized. JOHNS ET AL 9 SPOT TESTS 649 [7] Sobol, S. P. and Moore, R. A., in Analytical Manual, J. W. Gunn, Ed., Bureau of Narcotics and Dangerous Drugs, U.S. Government Printing Office 0-506-836, Washington, D.C., 1970, pp. 19, 169, 170. [8] Stewart, C. P. and Stolman, A., Toxicology: Mechanisms and Analytical Methods, Vol. 2, 3rd ed., Academic Press, New York, 1972, pp. 166, 229-231,242-250, 545-547. Address requests for reprints or additional information to S. H. Johns Illinois Department of Law Enforcement Bureau of Scientific Services 2291A Court St. Pekin, Ill. 61554 Copyright by ASTM Int'l (all rights reserved); Wed Apr 13 11:13:07 EDT 2016 Downloaded/printed by Ryan Gabrielson (ProPublica) pursuant to License Agreement. No further reproductions authorized.