1039:
1050:
1224:
71:
Unheated sulfuric acid can be used to prepare the reagent in a less dangerous manner, but 2–4 hours must be allowed for the molybdate to dissolve.
1188:
1092:
1308:
43:
1374:
1336:
583:
1084:
EMCDDA Risk
Assessment: Report on the Risk Assessment of PMMA in the Framework of the Joint Action on New Synthetic Drugs
1369:
208:
886:
46:
method for producing the reagent is the addition of 100 ml of hot, concentrated (95–98%) sulfuric acid to 0.5 g of
1364:
718:
198:
54:
298:
1239:
1194:
896:
1225:"Color Tests for the Preliminary Identification of Methcathinone and Analogues of Methcathinone"
916:
891:
1184:
1088:
238:
1176:
901:
728:
459:
47:
921:
906:
876:
859:
849:
769:
502:
348:
1082:
789:
491:
469:
1358:
911:
881:
829:
678:
429:
378:
228:
108:
58:
36:
32:
1198:
809:
799:
758:
748:
573:
1180:
976:
819:
698:
688:
449:
338:
88:
839:
604:
553:
258:
248:
738:
708:
656:
614:
594:
533:
288:
278:
218:
188:
98:
24:
977:"Color Test Reagents/Kits for Preliminary Identification of Drugs of Abuse"
624:
543:
268:
178:
168:
667:
523:
512:
439:
28:
1309:"Color Tests and Analytical Difficulties With Emerging Drugs of Abuse"
635:
480:
388:
779:
646:
368:
328:
318:
128:
118:
75:
Final colors produced by
Froehde Reagent with various substances
419:
408:
398:
358:
308:
158:
148:
138:
563:
53:
The
Virginia Department of Forensic Science method uses 0.5 g
984:
Law
Enforcement and Corrections Standards and Testing Program
31:, as well as other compounds. It is composed of a mixture of
16:
Test to presumptively identify alkaloids and other compounds
1316:
Johnson County
Sheriff’s Office Criminalistics Laboratory
39:, which is then dripped onto the substance being tested.
1337:"Modafinil reaction with the Froehde reagent and others"
23:
is used as a simple spot-test to presumptively identify
35:or a molybdate salt dissolved in hot, concentrated
971:
969:
967:
965:
963:
961:
959:
957:
1223:Toole KE, Fu S, Shimmon RG, Kraymen N (2012).
955:
953:
951:
949:
947:
945:
943:
941:
939:
937:
8:
1218:
1216:
1214:
1212:
1210:
1208:
1034:
1032:
1030:
1028:
1026:
1024:
1022:
1020:
1171:"Clarke's Analysis of Drugs and Poisons".
1166:
1164:
1162:
1160:
1158:
1156:
1154:
1152:
1150:
1148:
1146:
1144:
1142:
1140:
1138:
1136:
1134:
1132:
1130:
1018:
1016:
1014:
1012:
1010:
1008:
1006:
1004:
1002:
1000:
73:
1303:
1301:
1299:
1297:
1295:
1293:
1291:
1289:
1287:
1285:
1283:
1281:
1279:
1128:
1126:
1124:
1122:
1120:
1118:
1116:
1114:
1112:
1110:
1040:"Controlled Substances Procedures Manual"
1277:
1275:
1273:
1271:
1269:
1267:
1265:
1263:
1261:
1259:
1076:
1074:
1072:
1070:
1047:Virginia Department of Forensic Science
933:
7:
1339:. Reagent Tests UK. 13 December 2015
568:Moderate yellow green, Yellow Green
444:Greyish purple or Blue > Purple
44:United States Department of Justice
14:
1087:. Dictus Publishing. p. 54.
673:Very dark Green > Red - Brown
599:Green or brown or light yellow
662:Strong yellow - Blue or Green
1:
641:Deep purplish red > Green
630:Deep purplish Red > Slate
1181:10.1080/00450618.2011.620006
1391:
1238:(1): 27–32. Archived from
824:Green with purple streaks
764:Dark greyish red or Brown
383:Green > Black (fast)
719:Phenoxymethylpenicillin
1081:EMCDDA (30 Mar 2011).
1049:. 2013. Archived from
887:Dille–Koppanyi reagent
1375:Drug testing reagents
486:Moderate olive brown
343:Tan > Dark yellow
1173:Pharmaceutical Press
1370:Analytical reagents
578:Light olive yellow
528:Light bluish green
518:Deep reddish brown
393:Orange > Purple
93:No reaction or Red
76:
897:Liebermann reagent
497:Very yellow green
293:Yellow > Green
283:Yellow > Green
273:Yellow > Green
263:Yellow > Green
173:Yellow > Green
74:
55:ammonium molybdate
50:or molybdic acid.
1232:Microgram Journal
1190:978-0-85369-711-4
1094:978-3-8433-2695-7
868:
867:
784:Brilliant yellow
683:Blue > Purple
363:Green > Black
1382:
1349:
1348:
1346:
1344:
1333:
1327:
1326:
1324:
1323:
1313:
1305:
1254:
1253:
1251:
1250:
1244:
1229:
1220:
1203:
1202:
1168:
1105:
1104:
1102:
1101:
1078:
1065:
1064:
1062:
1061:
1055:
1044:
1036:
995:
994:
992:
991:
981:
973:
902:Mandelin reagent
729:Phenyltoloxamine
619:Deep orange/red
460:Chlorphentermine
77:
48:sodium molybdate
1390:
1389:
1385:
1384:
1383:
1381:
1380:
1379:
1355:
1354:
1353:
1352:
1342:
1340:
1335:
1334:
1330:
1321:
1319:
1311:
1307:
1306:
1257:
1248:
1246:
1242:
1227:
1222:
1221:
1206:
1191:
1170:
1169:
1108:
1099:
1097:
1095:
1080:
1079:
1068:
1059:
1057:
1053:
1042:
1038:
1037:
998:
989:
987:
979:
975:
974:
935:
930:
922:Zwikker reagent
917:Simon's reagent
907:Marquis reagent
892:Folin's reagent
877:Reagent testing
873:
860:Triflupromazine
850:Trifluoperazine
770:Propylhexadrine
651:Brownish black
589:Greenish black
548:Brilliant blue
503:Diphenhydramine
349:Methiopropamine
233:Yellow - Green
66:
62:
21:Froehde reagent
17:
12:
11:
5:
1388:
1386:
1378:
1377:
1372:
1367:
1365:Chemical tests
1357:
1356:
1351:
1350:
1328:
1255:
1204:
1189:
1106:
1093:
1066:
996:
932:
931:
929:
926:
925:
924:
919:
914:
909:
904:
899:
894:
889:
884:
879:
872:
869:
866:
865:
862:
856:
855:
852:
846:
845:
842:
836:
835:
832:
826:
825:
822:
816:
815:
812:
806:
805:
802:
796:
795:
792:
790:Salicylic acid
786:
785:
782:
776:
775:
772:
766:
765:
762:
755:
754:
751:
745:
744:
741:
735:
734:
731:
725:
724:
721:
715:
714:
711:
705:
704:
701:
695:
694:
691:
685:
684:
681:
675:
674:
671:
664:
663:
660:
653:
652:
649:
643:
642:
639:
632:
631:
628:
621:
620:
617:
611:
610:
607:
601:
600:
597:
591:
590:
587:
580:
579:
576:
570:
569:
566:
560:
559:
556:
550:
549:
546:
540:
539:
536:
530:
529:
526:
520:
519:
516:
509:
508:
505:
499:
498:
495:
492:Dimethoxy-meth
488:
487:
484:
477:
476:
475:Very deep red
473:
470:Chlorpromazine
466:
465:
462:
456:
455:
452:
446:
445:
442:
436:
435:
432:
426:
425:
422:
415:
414:
411:
405:
404:
401:
395:
394:
391:
385:
384:
381:
375:
374:
371:
365:
364:
361:
355:
354:
351:
345:
344:
341:
335:
334:
331:
325:
324:
321:
315:
314:
311:
305:
304:
301:
295:
294:
291:
285:
284:
281:
275:
274:
271:
265:
264:
261:
255:
254:
251:
245:
244:
241:
235:
234:
231:
225:
224:
221:
215:
214:
211:
205:
204:
201:
195:
194:
191:
185:
184:
181:
175:
174:
171:
165:
164:
163:Bright yellow
161:
155:
154:
153:Bright yellow
151:
145:
144:
141:
135:
134:
131:
125:
124:
121:
115:
114:
111:
105:
104:
101:
95:
94:
91:
85:
84:
81:
64:
60:
15:
13:
10:
9:
6:
4:
3:
2:
1387:
1376:
1373:
1371:
1368:
1366:
1363:
1362:
1360:
1338:
1332:
1329:
1317:
1310:
1304:
1302:
1300:
1298:
1296:
1294:
1292:
1290:
1288:
1286:
1284:
1282:
1280:
1278:
1276:
1274:
1272:
1270:
1268:
1266:
1264:
1262:
1260:
1256:
1245:on 2013-11-26
1241:
1237:
1233:
1226:
1219:
1217:
1215:
1213:
1211:
1209:
1205:
1200:
1196:
1192:
1186:
1182:
1178:
1174:
1167:
1165:
1163:
1161:
1159:
1157:
1155:
1153:
1151:
1149:
1147:
1145:
1143:
1141:
1139:
1137:
1135:
1133:
1131:
1129:
1127:
1125:
1123:
1121:
1119:
1117:
1115:
1113:
1111:
1107:
1096:
1090:
1086:
1085:
1077:
1075:
1073:
1071:
1067:
1056:on 2013-08-13
1052:
1048:
1041:
1035:
1033:
1031:
1029:
1027:
1025:
1023:
1021:
1019:
1017:
1015:
1013:
1011:
1009:
1007:
1005:
1003:
1001:
997:
985:
978:
972:
970:
968:
966:
964:
962:
960:
958:
956:
954:
952:
950:
948:
946:
944:
942:
940:
938:
934:
927:
923:
920:
918:
915:
913:
912:Mecke reagent
910:
908:
905:
903:
900:
898:
895:
893:
890:
888:
885:
883:
882:Drug checking
880:
878:
875:
874:
870:
863:
861:
858:
857:
853:
851:
848:
847:
843:
841:
838:
837:
833:
831:
830:Methapyrilene
828:
827:
823:
821:
818:
817:
813:
811:
808:
807:
803:
801:
798:
797:
793:
791:
788:
787:
783:
781:
778:
777:
773:
771:
768:
767:
763:
760:
757:
756:
752:
750:
747:
746:
742:
740:
737:
736:
732:
730:
727:
726:
722:
720:
717:
716:
712:
710:
707:
706:
702:
700:
697:
696:
693:Light Yellow
692:
690:
687:
686:
682:
680:
679:Hydromorphone
677:
676:
672:
669:
666:
665:
661:
658:
655:
654:
650:
648:
645:
644:
640:
637:
634:
633:
629:
626:
623:
622:
618:
616:
613:
612:
608:
606:
603:
602:
598:
596:
593:
592:
588:
585:
582:
581:
577:
575:
572:
571:
567:
565:
562:
561:
557:
555:
552:
551:
547:
545:
542:
541:
537:
535:
532:
531:
527:
525:
522:
521:
517:
514:
511:
510:
506:
504:
501:
500:
496:
493:
490:
489:
485:
482:
479:
478:
474:
471:
468:
467:
463:
461:
458:
457:
453:
451:
448:
447:
443:
441:
438:
437:
433:
431:
430:Acetaminophen
428:
427:
423:
421:
417:
416:
412:
410:
407:
406:
402:
400:
397:
396:
392:
390:
387:
386:
382:
380:
379:Allylescaline
377:
376:
372:
370:
367:
366:
362:
360:
357:
356:
352:
350:
347:
346:
342:
340:
337:
336:
332:
330:
327:
326:
322:
320:
317:
316:
312:
310:
307:
306:
302:
300:
297:
296:
292:
290:
287:
286:
282:
280:
277:
276:
272:
270:
267:
266:
262:
260:
257:
256:
252:
250:
247:
246:
242:
240:
237:
236:
232:
230:
229:Methoxetamine
227:
226:
223:Light yellow
222:
220:
217:
216:
212:
210:
207:
206:
202:
200:
197:
196:
192:
190:
187:
186:
182:
180:
177:
176:
172:
170:
167:
166:
162:
160:
157:
156:
152:
150:
147:
146:
142:
140:
137:
136:
132:
130:
127:
126:
123:No reaction
122:
120:
117:
116:
112:
110:
109:Methcathinone
107:
106:
102:
100:
97:
96:
92:
90:
87:
86:
82:
79:
78:
72:
69:
67:
56:
51:
49:
45:
40:
38:
37:sulfuric acid
34:
33:molybdic acid
30:
27:, especially
26:
22:
1341:. Retrieved
1331:
1320:. Retrieved
1315:
1247:. Retrieved
1240:the original
1235:
1231:
1172:
1098:. Retrieved
1083:
1058:. Retrieved
1051:the original
1046:
988:. Retrieved
983:
810:Thioridazine
800:Tetracycline
759:Propoxyphene
749:Promethazine
353:Light brown
323:Dark purple
183:Light brown
133:No reaction
113:No reaction
103:No reaction
70:
52:
41:
20:
18:
1343:18 December
986:. July 2000
820:Guaifenesin
814:Purple red
804:Purple red
794:Purple red
774:Purple red
753:Purple red
699:Pentazocine
689:Hydrocodone
627:monohydrate
454:Purple red
450:Alimemazine
339:Camfetamine
213:Pale green
203:Pale green
89:Amphetamine
57:per 100 ml
1359:Categories
1322:2013-07-16
1249:2013-10-28
1100:2012-01-25
1060:2013-08-06
990:2011-07-24
928:References
840:Pyrilamine
605:Meperidine
554:Flurazepam
434:Pale blue
418:b-methoxy-
313:Red brown
259:4-AcO-DALT
249:5-MeO-DALT
80:Substance
739:Promazine
709:Pethidine
657:Oxycodone
615:Modafinil
595:Mescaline
534:Ephedrine
289:4-AcO-DET
279:4-HO-MIPT
219:4-MeO-PCP
189:Naphyrone
149:Methylone
99:Cathinone
25:alkaloids
1199:71790993
1175:. 2011.
871:See also
625:Morphine
544:Exedrine
269:4-HO-MET
239:3-HO-PCE
179:3,4-DMMC
169:Butylone
68:(conc.)
864:Orange
854:Orange
844:Purple
834:Purple
743:Orange
713:Yellow
668:Codeine
558:Orange
524:Dristan
513:Doxepin
507:Orange
440:Aspirin
403:Yellow
373:Orange
333:Purple
303:Yellow
253:Yellow
193:Orange
29:opioids
1318:. 2012
1197:
1187:
1091:
733:Green
636:Heroin
538:Brown
481:Contac
464:Green
413:Green
389:2C-T-2
243:Black
143:Black
83:Color
1312:(PDF)
1243:(PDF)
1228:(PDF)
1195:S2CID
1054:(PDF)
1043:(PDF)
980:(PDF)
780:Sugar
723:Blue
703:Blue
647:Opium
609:Grey
369:5-IAI
329:6-APB
319:5-APB
129:3-FMC
119:4-MMC
1345:2015
1185:ISBN
1089:ISBN
574:Mace
424:Red
420:2C-D
409:2C-P
399:2C-B
359:MDAI
309:5-IT
209:PMMA
159:MDPV
139:MDMA
42:The
19:The
1177:doi
761:HCl
670:HCl
659:HCl
638:HCl
586:HCl
584:MDA
564:LSD
515:HCl
494:HCl
483:HCl
472:HCl
299:aMT
199:PMA
1361::
1314:.
1258:^
1234:.
1230:.
1207:^
1193:.
1183:.
1109:^
1069:^
1045:.
999:^
982:.
936:^
63:SO
1347:.
1325:.
1252:.
1236:9
1201:.
1179::
1103:.
1063:.
993:.
65:4
61:2
59:H
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.