55G
CII EJIISTRT AKD IXDUSTRY (see II.G.3). If thc nitro-group is nbsent, thc phosgcac rcngcat p p c r is uscd, nnd if this gives n positivc rcsiilt nnilinc watcr is used to codirrix tlic prcsencc of phosgene or diphosgcnc (see TI.B.2.3).
In thc nbscnce of nll thc nbovc gnscs, clilorinc nnd cynnogcn chloride only rcniniii. Thcsc nrc (IiRcrcntintcd by the cynnidc rciiction (SCC II.J.2).
This sclicme of annlysis is tnbulntcd bclow, and mny hc found uscful for tltc csaminntion of contnminntccl samples. If inistiires of gnscs occur, complicntions cnsuc, and this possibility should nlwitys bc considcred. LIST OF REAGENTS d\cctic ncitl I\lroliol !tU% l\iiiiiioiiin 25% i\iiiinotiicim chloritlc i\ininoniiitii siilpltitlc. ycllow Aniline : sntrirntctl , iiqiivniis solution roiitniiriiig n little tlipliciigliircii hnlicstos wool or gniizc Ihzeiic J%ctizitlitic iicctiite mtiinitctl soliitinir tliliitrtl with n i i t:qiinI ~o l u i i i c of wntcr llroiiiitic Ciirbon tetrncliloritlc Cliiirconl : ortliiinry iiiitl for nqiicotis iiictliiitti Cliroriiic iicid %:/, Coppcr ncctntc Coppcr ositlo Copper riitlplinte Ccippcr airc Citproiis soliitioii :I g. CtiSO, 5 aq., 3 g. SII,CI. 8 g.