Isocyanate is the chemical group of atoms -N=C=O (1 nitrogen, 1 carbon, 1 oxygen), as opposed to cyanate, -O-C≡N, which is formed from cyanogen in the normal -ate manner. An isocyanate is a compound containing the isocyanate group.
A detectable odor of methyl isocyanate is a concentration triple the permissible exposure.
The toxic effect of the compound was apparent in the accidental release of around 40,000 kilograms of methyl isocyanate over Bhopal, India on December 3, 1984.
It was discovered in 1888 as an ester of isocyanic acid.
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