... or volumeof a-naphthylamine, 3,30 -dichlorobenzidine (and its salts), ethyleneimine, b-propiolac-tone, 2-acetylaminofluorene, 4-dimethylaminoazo-benzene, or N-nitrosodimethyl-amine.The speci ... No. 91941 5. Bis-chloromethyl ether, CAS No. 54 28816. b-Naphthylamine, CAS No. 9 159 87. Benzidine, CAS No. 928 75 8. 4-Aminodiphenyl, CAS No. 926719. Ethyleneimine, CAS No. 151 56410. b-Propiolactone, ... 151 56410. b-Propiolactone, CAS No. 57 57811. 2-Acetylaminofluorene, CAS No. 53 96312. 4-Dimethylaminoazo-benzene, CAS No. 6011713. N-Nitrosodimethylamine, CAS No. 62 759 There are many other chemicals...