... 919415. Bis-chloromethyl ether, CAS No. 54 288 16. b-Naphthylamine, CAS No. 915 98 7. Benzidine, CAS No. 9 287 5 8. 4-Aminodiphenyl, CAS No. 926719. Ethyleneimine, CAS No. 15156410. b-Propiolactone, ... vermin(birds, rats, mice, etc.), and bacterial contaminants (sanitation and house-keeping items such as potable water, removal of industrial waste and sewage, food handling, and personal cleanliness ... bis-chloromethyl ether, b-naphthylamine, benzidine, or 4-aminodiphenyl and solid or liquid mixtures containing less than 1.0% by weight or volumeof a-naphthylamine, 3,30 -dichlorobenzidine (and...