Methyl thiocyanate

Methyl thiocyanate
Names
	IUPAC name methyl thiocyanate
	Systematic IUPAC name methyl thiocyanate
	Other names Thiocyanic acid methyl ester;[1] Methylrhodanid; methylrhodanate; Methylthiokyanat; Thiocyanomethane; Methyl rhodanide; Methyl thiocyanate; thiocyanato-methan; methylsulfocyanate; Methylsalfocyanate[2]
Identifiers
CAS Number	556-64-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	10695;
ECHA InfoCard	100.008.305
EC Number	209-134-6;
MeSH	C047435
PubChem CID	11168;
UNII	55I23VY6IE ;
CompTox Dashboard (EPA)	DTXSID5060304 ;
	InChI InChI=1S/C2H3NS/c1-4-2-3/h1H3;
	SMILES N#CSC;
Properties
Chemical formula	C2H3NS
Molar mass	73.117
Appearance	Colourless liquid
Density	1.074 g/cm3
Melting point	−51 °C (−60 °F; 222 K)
Boiling point	132 °C (270 °F; 405 K) (101.3 kP)
Solubility in water	Slightly soluble[3]
Solubility in Diethyl ether	Miscible[3]
Structure
Molecular shape	bent C-S-CN
Hazards
R-phrases (outdated)	R10, R23/24/25[1]
S-phrases (outdated)	S16, S26, S27, S28[1]
NFPA 704 (fire diamond)	3 3 0
Flash point	38 °C (100 °F; 311 K)[1]
Related compounds
Related compounds	Methyl isocyanate; Methyl isothiocyanate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

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).[4]

Safety

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.[5]

References

"Chemblink chemical data". Retrieved June 29, 2011.
"Chemical book page". Retrieved June 29, 2011.
"United States chemical entree". Retrieved June 29, 2011.
F. Romanowski, H. Klenk "Thiocyanates and Isothiocyanates, Organic" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH: Weinheim. doi:10.1002/14356007.a26_749
40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities (PDF) (July 1, 2008 ed.), Government Printing Office, archived from the original (PDF) on February 25, 2012, retrieved March 8, 2009

[blink-1] "Chemblink chemical data". Retrieved June 29, 2011.

[book-2] "Chemical book page". Retrieved June 29, 2011.

[US_gov-3] "United States chemical entree". Retrieved June 29, 2011.

[Ullmann-4] F. Romanowski, H. Klenk "Thiocyanates and Isothiocyanates, Organic" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH: Weinheim. doi:10.1002/14356007.a26_749

[list-5] 40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities (PDF) (July 1, 2008 ed.), Government Printing Office, archived from the original (PDF) on February 25, 2012, retrieved March 8, 2009