556-64-9 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 556-64-9 differently. You can refer to the following data:
1. CLEAR COLOURLESS TO LIGHT YELLOW LIQUID
2. Methyl thiocyanate is a colorless liquid.
Onion-like odor
Definition
ChEBI: Methyl thiocyanate is a member of the class of thiocyanates, being the methyl ester of thiocyanic acid.
General Description
Colorless liquid and an odor of onions. Used as an agricultural insecticide, a fumigant and as a research chemical. No evidence of commercial production in the U.S.
Air & Water Reactions
Very slightly soluble in water [Merck].
Reactivity Profile
Methyl thiocyanate is a moderately toxic liquid, flammable. Violent, possibly explosive oxidation reaction when mixed with chlorates, nitrates, nitric acid, organic or inorganic peroxides, perchlorates. On contact with mineral acids or acid fumes deadly toxic hydrogen cyanide gas is produced. When heated to decomposition or on contact with mineral acids Methyl thiocyanate emits highly toxic fumes of nitriles, oxides of sulfur and nitrogen [Lewis, 3rd ed., 1993, p. 879, 1234].
Health Hazard
Methyl thiocyanate is highly toxic if ingested. It is a rapidly acting poison.
Fire Hazard
When heated to decomposition, Methyl thiocyanate emits very toxic fumes of oxides of nitrogen and sulfur. (Non-Specific -- Thiocyanates) Incompatible with nitric acid. Violent reactions have occurred when mixed with chlorates, nitrates, nitric acid, organic peroxides, peroxides, potassium chlorate, and sodium chlorate. Methyl thiocyanate is volatile.
Safety Profile
Poison by ingestion,
intravenous, and subcutaneous routes.
When heated to decomposition it emits very
toxic fumes of NOx and SOx.
Potential Exposure
It is used as an agricultural insecticide; a fumigant; and as a research chemical. No evidence
of commercial production in the United States.
Shipping
UN2929 Toxic liquids, flammable, organic,
n.o.s., Hazard class: 6.1; Labels: 6.1-Poison Inhalation
Hazard, 3-Flammable liquid, Technical Name Required.
UN1992 Flammable liquids, toxic, n.o.s., Hazard Class: 3;
Labels: 3-Flammable liquid, 6.1-Poisonous materials,
Technical Name Required.
Incompatibilities
Incompatible with nitric acid. Violent
reactions have occurred when mixed with chlorates,
nitrates, nitric acid; peroxides, potassium chlorate; and
sodium chlorate.
Check Digit Verification of cas no
The CAS Registry Mumber 556-64-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,5 and 6 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 556-64:
(5*5)+(4*5)+(3*6)+(2*6)+(1*4)=79
79 % 10 = 9
So 556-64-9 is a valid CAS Registry Number.
InChI:InChI=1/C2H3NS/c1-4-2-3/h1H3
556-64-9Relevant articles and documents
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Bolto,Miller
, p. 558,559 (1955)
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Halomethane biosynthesis: Structure of a SAM-dependent halide methyltransferase from arabidopsis thaliana
Schmidberger, Jason W.,James, Agata B.,Edwards, Robert,Naismith, James H.,O'Hagan, David
, p. 3646 - 3648 (2010)
It's a gas ! The structure of the halomethane-producing halo/thiocyanate methyltransferase enzyme from plants has been determined. The halide ion and the methyl group of S-adenosyl-L-methionine (SAM) were modeled into the active site (see picture; chloride: green sphere; SAM: C green, O red, S yellow, N blue), which indicated their predisposition for reaction. (Figure Presented)
Polymer-supported thiocyanate as new, versatile and efficient polymeric reagent for conversion of alkyl halides to corresponding alkyl thiocyanates under mild conditions
Zarchi, Mohammad Ali Karimi
, p. 1299 - 1302 (2008/02/13)
Crosslinked poly(N-methyl-4-vinylpyridinium)thiocyanate [P 4-Me]SCN (II) is prepared easily and is used as a new polymeric reagent for synthesis of alkyl thiocyanates from alkyl halides under mild and nonaqueous conditions. The used polymeric reagent usually can be removing quantitatively and be regenerated.
Flash vacuum pyrolysis (F.V.P.) of 1,2,4-benzotriazine derivatives
Riedl, Zsuzsanna,Hajós, Gy?rgy,Peláez, Walter J.,Gafarova, Ioulia T.,Moyano, Elizabeth L.,Yranzo, Gloria I.
, p. 851 - 856 (2007/10/03)
Flash vacuum pyrolysis of 3-methylsulfanyl-1,2,4-benzotriazine N-oxide, 3-methylsulfanyl-1,2,4-benzotriazine, and 3-phenyl-1,2,4-benzotriazine are described. The N-oxide derivative underwent deoxygenation between 500 and 600°C, whereas at higher temperatures both methylsulfanyl compounds, besides yielding the same products, also gave benzimidazole formed by an independent mechanism. Transformation of these derivatives between 600 and 750°C led to formation of a complex reaction mixture indicating the radical nature of the processes. The phenyl substituted derivative was studied between 575 and 650°C and afforded benzonitrile and traces of biphenylene.
