methyl isocyanate methyl isocyanate you methyl isocyanate bhopal india 1984 methyl isocyanate ch3 n c o is used in methyl isocyanate spex certiprep atom labelling of methyl isocyanate methyl isocyanate mic toxic molecule answered methyl isocyanate ch3 n c methyl isocyanate the first responder methyl isocyanate ch3nco carbamic acid derivative as a surrogate methyl isocyanate illinois poison center