Methyl thiocyanate

Methyl thiocyanate
Names
	Preferred IUPAC name Methyl thiocyanate
	Other names Thiocyanic acid methyl ester; Methylrhodanid; methylrhodanate; Methylthiokyanat; Thiocyanomethane; Methyl rhodanide; Methyl thiocyanate; thiocyanato-methan; methylsulfocyanate; Methylsalfocyanate
Identifiers
CAS Number	556-64-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:61112;
ChemSpider	10695;
EC Number	209-134-6;
MeSH	C047435
PubChem CID	11168;
UNII	55I23VY6IE ;
UN number	2929 1935
	InChI InChI=1S/C2H3NS/c1-4-2-3/h1H3 Key: VYHVQEYOFIYNJP-UHFFFAOYSA-N;
	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
Solubility in Diethyl ether	Miscible
Structure
Molecular shape	bent C-S-CN
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H226, H301, H311, H315, H319, H330, H331, H335
Precautionary statements	P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P280, P284, P301+P310, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P312, P320, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	<imagemap> File:NFPA 704.svg\|80px\|alt=NFPA 704 four-colored diamond poly 150 150 300 300 150 450 0 300 Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas poly 300 0 450 150 300 300 150 150 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 poly 450 150 600 300 450 450 300 300 Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen poly 300 300 450 450 300 600 150 450 Special hazards (white): no code desc none </imagemap> 3 3 0
Flash point	38 °C (100 °F; 311 K)
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. 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).^[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

^ ^1.0 ^1.1 "Chemblink chemical data". Retrieved June 29, 2011.
^ "Chemical book page". Retrieved June 29, 2011.
^ ^3.0 ^3.1 "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] 1.0 ^1.1 "Chemblink chemical data". Retrieved June 29, 2011.

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

[US_gov-3] 3.0 ^3.1 "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

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