Methyl thiocyanate

Methyl thiocyanate is an organic compound with the formula CH3SCN.

The simplest member of the organic thiocyanates, it is a colourless liquid with an onion-like odor.

It is produced by the methylation of thiocyanate salts.

The compound is a precursor to the more useful isomer methyl isothiocyanate (CH3NCS).

It is listed as an extremely hazardous substance by the United States's Emergency Planning and Community Right-to-Know Act.

NFPA 704 four-colored diamond Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas Flammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasoline Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen Special hazards (white): no code