... 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 ... 15156410. b-Propiolactone, CAS No. 575 7811. 2-Acetylaminofluorene, CAS No. 5396312. 4-Dimethylaminoazo-benzene, CAS No. 601 17 13. N-Nitrosodimethylamine, CAS No. 6 275 9There are many other chemicals ... s:.Vinyl chlor ide (1910.10 17) .Inorganic arsenic (1910.10 18).Cadmium (1910.10 27 and 1926.112 7) .Benzene (1910.10 28).Coke oven emissio ns (1910.10 29).1,2-Dibr omo-3-chl oropro pane (1910.10...