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Methyl thiocyanate

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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
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.008.305 Edit this at Wikidata
EC Number
  • 209-134-6
MeSH C047435
PubChem CID
UNII
UN number 2929 1935
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C2H3NS/c1-4-2-3/h1H3Key: VYHVQEYOFIYNJP-UHFFFAOYSA-N
SMILES
  • N#CSC
Properties
Chemical formula C2H3NS
Molar mass 73.117
Appearance Colourless liquid
Density 1.074 g/cm
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 GHS02: FlammableGHS06: ToxicGHS07: Exclamation mark
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)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 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. gasolineInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
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 , 100 kPa). Infobox references
Chemical compound

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).

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.

References

  1. ^ "Chemblink chemical data". Retrieved June 29, 2011.
  2. "Chemical book page". Retrieved June 29, 2011.
  3. ^ "United States chemical entree". Retrieved June 29, 2011.
  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
  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
Sulfur compounds
Sulfides and
disulfides
Sulfur halides
Sulfur oxides
and oxyhalides
Sulfites
Sulfates
Sulfur nitrides
Thiocyanates
Organic compounds
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