TSCA Inventory (I've gone through thousands):
chemical known as #36450,67786-33-8,677863 "Isocyanic acid",
and chemical known as36451,67786-34-9,67786349,"Isocyanic acid" are on the list
as well as: #37635,67924-36-1,67924361,"Isocyanic acid,
#40490 56558,72797-30-9,72797309,"Isocyanic",
#40713,68240-16-4,68240164,"Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,3-diisocyanatomethylbenzene,
#41268,68240-04-0,68240040,"Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,3-diisocyanatomethylbenzene,
#41269,68240-05-1,68240051,"Isocyanic acid, polymethylenepolyphenylene ester, polymer with 1,3-diisocyanatomethylbenzene, .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and 2-methyloxirane polymer with oxirane ether with 1,2,3-propanetriol (3:1)",,XU,,
#43295,68442-02-4,68442024,"Isocyanic acid, polymethylenepolyphenylene ester, polymers with hydroxy-terminated polybutadiene, polypropylene glycol and TDI",,XU,UVCB,
#43296,68442-03-5,68442035,"Isocyanic acid, polymethylenepolyphenylene ester, polymers with hydroxy-terminated polybutadiene",,XU,UVCB,
