|Preferred IUPAC name
3D model (JSmol)
CompTox Dashboard (EPA)
|Melting point||-51 °C (-60 °F; 222 K)|
|Boiling point||132 °C (270 °F; 405 K) (101.3 kP)|
|Solubility in Diethyl ether||Miscible|
|R-phrases (outdated)||R10, R23/24/25|
|S-phrases (outdated)||S16, S26, S27, S28|
|NFPA 704 (fire diamond)|
|Flash point||38 °C (100 °F; 311 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Methyl thiocyanate is an organic compound with the formula CH3SCN. 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).
The LD50 is 60 mg/kg (rats, oral).
It is listed as an extremely hazardous substance by the United States's Emergency Planning and Community Right-to-Know Act.