Methyl thiocyanate supplier

Name
Methyl thiocyanate
EINECS 209-134-6
CAS No. 556-64-9
Article Data51
CAS DataBase
Density 1.06
Solubility Practically insoluble in water
Melting Point -5 ºC
Formula C2H3 N S
Boiling Point 131 ºC
Molecular Weight 73.1185
Flash Point 38 ºC
Transport Information
Appearance CLEAR COLOURLESS TO LIGHT YELLOW LIQUID
Safety Poison by ingestion, intravenous, and subcutaneous routes. When heated to decomposition it emits very toxic fumes of NO_x and SO_x. See also THIOCYANATES.
Risk Codes R10;R23/24/25
Molecular Structure
Hazard Symbols
Synonyms Methylsulfocyanate; Methyl thiocyanate; NSC 9368
PSA 49.09000
LogP 0.83048

Synthetic route

: 333-20-0
potassium thioacyanate

: 74-88-4
methyl iodide

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
With poly(vinylbenzyltriphenylphosphonium chloride) In benzene for 2h; Heating;	88%

: 75532-40-0
dimethyl phosphoroisothiocyanatidite

: 431-03-8
dimethylglyoxal

A: 556-64-9
methyl thiocyanate

B: 933-43-7
2-methoxy-4,5-dimethyl-[1,3,2]dioxaphosphole 2-oxide

Conditions

Conditions	Yield
In dichloromethane at 0℃;	A n/a B 80%

...Expand

: 59103-08-1
3-methylsulfanyl-5,6-diphenyl-[1,4,2]dithiazine

A: 556-64-9
methyl thiocyanate

B: 23181-79-5
2,3,5,6-tetraphenyl-1,4-dithia-2,5-cyclohexadiene

C: 501-65-5
diphenyl acetylene

Conditions

Conditions	Yield
In dichloromethane for 4h; Irradiation;	A n/a B 72% C n/a
In dichloromethane for 8h; Quantum yield; Mechanism; Irradiation;

...Expand

: 2911-22-0
6-methyl-4-oxo-2-thioxo-3,4-dihydro-2H-1,3-oxazine

: 74-88-4
methyl iodide

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
With potassium carbonate In acetone for 1h; Ambient temperature;	64%

: 79306-34-6
1-azido-2,2-dimethylcyclopropyl methylsulfide

A: 556-64-9
methyl thiocyanate

B: 2-(methylthio)-4,4-dimethyl-1-azetine

C: 79780-50-0
2-(methylthio)-3,3-dimethyl-1-azetine

D: 115-11-7
isobutene

Conditions

Conditions	Yield
In tetrachloromethane for 3h; Heating;	A 30% B 6% C 63% D n/a
In tetrachloromethane for 3h; Rate constant; Heating;	A 30% B 6% C 63% D n/a
In tetrachloromethane for 3h; Heating;

...Expand

: 83319-07-7
C19H18NS(1+)*CNS(1-)

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
at 240℃;	52%

poly(N-methyl-4-vinyl-pyridinium)thiocyanate: poly(N-methyl-4-vinyl-pyridinium)thiocyanate

: 74-88-4
methyl iodide

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
In hexane at 20℃; for 72h;	50%

: 333-20-0
potassium thioacyanate

: S-methylthiolanium fluorosulphate

A: 110-01-0
thiophene

B: 556-64-9
methyl thiocyanate

C: 4430-36-8
erucin

D: 41756-12-1
4-(methylthio)butyl thiocyanate

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 70℃; for 7h; Yields of byproduct given;	A n/a B n/a C n/a D 45%

...Expand

: 333-20-0
potassium thioacyanate

: S-methylthietanium fluorosulphate

A: 556-64-9
methyl thiocyanate

B: 15394-33-9
methyl 4-(methylsulfanyl)butyl sulfide

C: 86702-84-3
3-(methylthio)propyl thiocyanate

D: 103707-78-4
1-(4-Methylsulfanyl-butylsulfanyl)-4-thiocyanato-butane

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 60℃; for 1.5h;	A 20% B 7% C 25% D 18%

...Expand

: 333-20-0
potassium thioacyanate

: S-methylthianium fluorosulphate

A: 1613-51-0
sulfure de pentamethylene

B: 556-64-9
methyl thiocyanate

C: 1-Methylsulfanyl-5-thiocyanato-pentane

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 80℃; for 5h; Yields of byproduct given;	A n/a B n/a C 4%

...Expand

: 186581-53-3, 908094-01-9
diazomethane

: 463-56-9
thiocyanic acid

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
With diethyl ether at -5℃;

: 67-56-1
methanol

: 463-56-9
thiocyanic acid

: 13118-32-6
p-nitrophenyldimethylsulphonium methylsulphate

A: 556-64-9
methyl thiocyanate

B: 701-57-5
1-methylthio-4-nitro-benzene

Conditions

Conditions	Yield
at 25 - 45℃; Rate constant;

...Expand

: 75-18-3
dimethylsulfide

: 506-68-3
bromocyane

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
at 100℃; im geschlossenen Rohr;

: 506-68-3
bromocyane

: 766-92-7
[(methylthio)methyl]-benzene

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
at 60 - 70℃;

: 506-68-3
bromocyane

: 766-92-7
[(methylthio)methyl]-benzene

A: 556-64-9
methyl thiocyanate

B: 100-39-0
benzyl bromide

Conditions

Conditions	Yield
at 60 - 70℃; im Rohr;

...Expand

: 35266-49-0
methoxycarbonylisothiocyanate

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
beim Erhitzen;

: bis-methylsulfanylcarboximidoyl-diazene

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
at 110℃;

: bis-methylsulfanylcarboximidoyl-diazene

A: 556-64-9
methyl thiocyanate

B: 74586-16-6
S,S'-dimethyl-dithiodiisobiurea

C: 624-92-0
Dimethyldisulphide

D: 460-19-5
ethanedinitrile

Conditions

Conditions	Yield
at 110℃; Zersetzen; Produkt 5: 5-Methylmercapto-3-imino-1.2.4-triazolidin;

...Expand

: 333-20-0
potassium thioacyanate

: 75-58-1
tertamethylammonium iodide

A: 556-64-9
methyl thiocyanate

B: 556-61-6
methyl thioisocyanate

C: 75-50-3
trimethylamine

Conditions

Conditions	Yield
at 210℃;

...Expand

: 15597-46-3
tetramethylammonium thiocyanate

A: 556-64-9
methyl thiocyanate

B: 75-50-3
trimethylamine

Conditions

Conditions	Yield
at 304 - 305℃;

: 333-20-0
potassium thioacyanate

: 77-78-1
dimethyl sulfate

: 556-64-9
methyl thiocyanate

: 2092-17-3
barium thiocyanate

: 77-78-1
dimethyl sulfate

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
With water

: 1701-93-5
silver thiocyanate

: 74-88-4
methyl iodide

: 556-64-9
methyl thiocyanate

: 4818-24-0
3-methylsulfanyl-5,6,7,8-tetrahydro-benzo[1,4,2]dithiazine

A: 556-64-9
methyl thiocyanate

B: 501-65-5
diphenyl acetylene

Conditions

Conditions	Yield
In dichloromethane for 8h; Quantum yield; Irradiation;

: 29897-71-0
2,4,6-tricyanoanisole

A: 556-64-9
methyl thiocyanate

B: potassium 2,4,6-tricyanophenolate

Conditions

Conditions	Yield
With potassium thioacyanate In dimethyl sulfoxide Product distribution; Mechanism;

: 51404-78-5
dimethyl-p-tolylsulfonium tetrafluoroborate

A: 556-64-9
methyl thiocyanate

B: 623-13-2
4-methylphenyl methylsulfide

Conditions

Conditions	Yield
With cyclophane (1); HPLC buffer; potassium thioacyanate at 45.9℃; Rate constant; pD 9; without cyclophanes;

: 33613-52-4
dimethylphenyl sulfonium tetrafluoroborate

A: 556-64-9
methyl thiocyanate

B: 100-68-5
methyl-phenyl-thioether

Conditions

Conditions	Yield
With cyclophane (1); HPLC buffer; potassium thioacyanate at 45.9℃; Rate constant; pD 9; without cyclophanes;

: 78949-38-9
methyl phosphorodiisothiocyanatidite

: 3735-81-7
Phosphoric acid dimethyl ester 2,2,2-trichloro-ethyl ester

: 556-64-9
methyl thiocyanate

Conditions

Conditions	Yield
Product distribution;

: dimethyl(p-fluorophenyl)sulfonium tetrafluoroborate

A: 556-64-9
methyl thiocyanate

B: 371-15-3
p-fluorothioanisole

Conditions

Conditions	Yield
With cyclophane (1); HPLC buffer; potassium thioacyanate at 45.9℃; Rate constant; pD 9; without cyclophanes;

: dimethyl(p-chlorophenyl)sulfonium tetrafluoroborate

A: 556-64-9
methyl thiocyanate

B: 123-09-1
4-chlorophenyl methyl sulfide

Conditions

Conditions	Yield
With cyclophane (1); HPLC buffer; potassium thioacyanate at 45.9℃; Rate constant; pD 9; without cyclophanes;

: 556-64-9
methyl thiocyanate

: 521287-10-5
ethyl 2-amino-6-cyanoindole-3-carboxylate

: 722485-03-2
ethyl 5-cyano-2-(methylsulfanylimidoylamino)-1H-indole-3-carboxylate hydrochloride

Conditions

Conditions	Yield
With hydrogenchloride In 1,4-dioxane at 20 - 60℃;	100%

: 556-64-9
methyl thiocyanate

: 1192739-52-8
C13H21NO

: 1192739-72-2
2-cyclohexyl-4-(methylthio)-5,6,7,8-tetrahydroquinazoline

Conditions

Conditions	Yield
With 2-chloropyridine; trifluoromethylsulfonic anhydride In dichloromethane at -78 - 23℃; Inert atmosphere;	100%

: 556-64-9
methyl thiocyanate

: 100-20-9
terephthaloyl chloride

: 125077-76-1
2,2'-(1,4-Phenylen)bis<4,6-bis(methylthio)-1,3,5-oxadiazinium>-dihexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane for 2h; Ambient temperature;	98%

: 556-64-9
methyl thiocyanate

: 122-01-0
4-chloro-benzoyl chloride

: 2-(4-Chlorphenyl)-4,6-bis(methylthio)-1,3,5-oxadiazinium-hexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane at 0℃; for 1h;	97%

: 556-64-9
methyl thiocyanate

: 99-63-8
benzene-1,3-dicarbonyl dichloride

: 125077-78-3
2,2'-(1,3-Phenylen)bis<4,6-bis(methylthio)-1,3,5-oxadiazinium>-dihexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane for 2h; Ambient temperature;	97%

: 556-64-9
methyl thiocyanate

: 5299-98-9
(2E,4E)-3-methyl-5-(2,6,6-trimethyl-cyclohex-1-enyl)-penta-2,4-dienenitrile

: 330808-35-0
3-methyl-2-thiomethyl-5-(2',6',6'-trimethyl-1'-cyclohexen-1'-yl)-2,4-pentadienenitrile

Conditions

Conditions	Yield
With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -85℃;	97%

: 556-64-9
methyl thiocyanate

: 18228-46-1
1-(p-methoxyphenyl)-2-methylpropan-1-ol

: S-methyl N-[1-(4-hydroxyphenyl)-2-methylprop-2-yl]thiocarbamate

Conditions

Conditions	Yield
With sulfuric acid In toluene Ritter reaction;	97%

: 556-64-9
methyl thiocyanate

: 20638-88-4
9-trans-13-trans-dimethyl-7-(1,1,5-trimethyl-5-cyclohexen-6-yl)-7,9,11,13-nonatetraene-15-nitrile

: 3,7-dimethyl-2-thiomethyl-9-(2',6',6'-trimethyl-1'-cyclohexen-1'-yl)-2,4,6,8-nonatetraenenitrile

Conditions

Conditions	Yield
With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -85℃;	96%

: 556-64-9
methyl thiocyanate

: 32974-66-6
1-[(1-chloro-1-methylethyl)azo]-2,4,6-trichlorobenzene

: 2,3-Dimethyl-5-methylthio-1-(2,4,6-trichlorophenyl)-1H-1,2,4-triazolium Hexachloroantimonate

Conditions

Conditions	Yield
With antimonypentachloride In dichloromethane at -60 - 23℃;	95%

: 556-64-9
methyl thiocyanate

: 10533-37-6
potassium O,O-diisopropyl phoshorodithioate

: 22907-64-8
O,O-diisopropyl S-methyl phosphorothioate

Conditions

Conditions	Yield
at 90 - 100℃; for 2.5h;	95%

: 556-64-9
methyl thiocyanate

: 10533-36-5
diisopropyl monothiophosphoric acid, sodium salt

: 22907-64-8
O,O-diisopropyl S-methyl phosphorothioate

Conditions

Conditions	Yield
at 90 - 100℃; for 2.5h;	95%

: 556-64-9
methyl thiocyanate

: 122-04-3
4-nitro-benzoyl chloride

: 2,4-Bis(methylthio)-6-(4-nitrophenyl)-1,3,5-oxadiazinium-hexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane at 0℃; for 1h;	95%

: 556-64-9
methyl thiocyanate

: 107-56-2
O,O-diisopropyl hydrogen phosphorodithioate

: 69674-00-6
diisopropoxythiophosphoryl isothiocyanate

Conditions

Conditions	Yield
at 100℃; for 3h;	95%

: 556-64-9
methyl thiocyanate

: 2253-43-2
O.O-Dipropyl-dithyophosphat

: 61680-00-0
O,O-dipropyl phosphoroisothiocyanatidothioate

Conditions

Conditions	Yield
at 100℃; for 3h;	95%

: 556-64-9
methyl thiocyanate

: 523-80-8
apiol

: 4,9-dimethoxy-7-methyl-5-methylsulfanyl-7,8-dihydro[1,3]dioxolo[4,5g]isoquinoline

Conditions

Conditions	Yield
With trifluorormethanesulfonic acid In chloroform for 0.25h; Reagent/catalyst; Ritter Amidation; Reflux;	95%

: 556-64-9
methyl thiocyanate

: 20939-15-5
4-amino-5-methyl-2,4-dihydro-[1,2,4]triazole-3-thione

: 13228-91-6
3-methyl-6-methylsulfanyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole

Conditions

Conditions	Yield
With PPA for 6h; boiling water bath;	94%

: 556-64-9
methyl thiocyanate

: 22288-78-4
Methyl 3-aminothiophene-2-carboxylate

: 176530-46-4
2-(methylthio)thieno[3,2-d]pyrimidin-4(3H)-one

Conditions

Conditions	Yield
With hydrogenchloride In 1,4-dioxane at 90℃; for 24h; Sealed tube;	94%

: 556-64-9
methyl thiocyanate

: 697288-02-1
dimethyl 2-(3-phenyl-3-butenyl)-2-(2-propynyl)malonate

: dimethyl 2-(3-methylthio-2-propynyl)-2-(3-phenyl-3-butenyl)malonate

Conditions

Conditions	Yield
Stage #1: dimethyl 2-(3-phenyl-3-butenyl)-2-(2-propynyl)malonate With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78℃; for 0.5h; Stage #2: methyl thiocyanate In tetrahydrofuran; hexane at -78 - 20℃; for 17h;	93.4%

: 556-64-9
methyl thiocyanate

: 2873-74-7
gloutaric dichloride

: 125077-70-5
2,2'-(1,3-Propandiyl)bis<4,6-bis(methylthio)-1,3,5-oxadiazinium>-dihexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane for 2h; Ambient temperature;	93%

: 556-64-9
methyl thiocyanate

: 3454-66-8
potassium O,O-diethyldithiophosphate

: 3288-58-2
O,O-diethyl S-methyl phosphorodithioate

Conditions

Conditions	Yield
at 100 - 130℃; for 3h;	93%

: 556-64-9
methyl thiocyanate

: 7472-54-0
N-(p-methoxyphenyl)benzamide

: 959217-28-8
6-methoxy-4-(methylthio)-2-phenylquinazoline

Conditions

Conditions	Yield
With 2-chloropyridine; trifluoromethylsulfonic anhydride In dichloromethane at -78 - 140℃; for 0.35h; Inert atmosphere; Microwave irradiation;	93%

: 556-64-9
methyl thiocyanate

: 874-60-2
4-methyl-benzoyl chloride

: 2-(4-Methylphenyl)-4,6-bis(methylthio)-1,3,5-oxadiazinium-hexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane at 0℃; for 1h;	92%

: 556-64-9
methyl thiocyanate

: 372-48-5
2-fluoropyridine

: 2-fluoro-3-methylthiopyridine

Conditions

Conditions	Yield
With lithium diisopropyl amide In tetrahydrofuran at -78 - 0℃; for 2.5h;	92%

: 556-64-9
methyl thiocyanate

: 373-02-4, 14998-37-9, 33025-09-1, 94044-50-5, 98268-31-6
nickel diacetate

: 24246-07-9
methyl 2-(5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)acetate

: C28H26N6NiO6S2

Conditions

Conditions	Yield
In methanol for 3h; Reflux;	92%

...Expand

: 556-64-9
methyl thiocyanate

: 29515-99-9
5-methylsulfanyl-1H-tetrazole

Conditions

Conditions	Yield
With sodium azide; titanium(IV) dioxide In N,N-dimethyl-formamide at 110℃; for 20h; regiospecific reaction;	91%
Stage #1: methyl thiocyanate With sodium azide In water at 20℃; for 0.5h; Stage #2: With hydrogen bromide In water pH=1-2;	88%
With ammonium azide; N,N-dimethyl-formamide; lithium chloride
With azide(1-)

: 556-64-9
methyl thiocyanate

: 627-63-4
fumaryl dichloride

: 125077-74-9
2,2'-(1,2-Ethendiyl)bis<4,6-bis(methylthio)-1,3,5-oxadiazinium>-dihexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane for 2h; Ambient temperature;	91%

: 556-64-9
methyl thiocyanate

: 7023-78-1
2-diazo-1-(3-chlorophenyl)ethanone

A: 1-(3-chlorophenyl)-2-ethoxyethan-1-one

B: 2-methylthio-5-(m-chlorophenyl)oxazole

Conditions

Conditions	Yield
With boron trifluoride diethyl etherate at 0℃;	A 4% B 91%

...Expand

: 556-64-9
methyl thiocyanate

: 293313-46-9
N-(But-3-ynyl)-N-(4-methylpenta-2,3-dienyl)-4-methylbenzenesulfonamide

: 293313-47-0
N-(4-Methythiobut-3-ynyl)-N-(4-methylpenta-2,3-dienyl)-4-methylbenzenesulfonamide

Conditions

Conditions	Yield
Stage #1: N-(But-3-ynyl)-N-(4-methylpenta-2,3-dienyl)-4-methylbenzenesulfonamide With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.25h; Metallation; Stage #2: methyl thiocyanate In tetrahydrofuran; hexane at -78℃; for 0.5h; Substitution;	91%

: 556-64-9
methyl thiocyanate

: 100-86-7
2-Methyl-1-phenyl-2-propanol

: 132628-97-8
1-methylsulfanyl-3,3-dimethyl-3,4-dihydroisoquinoline

Conditions

Conditions	Yield
With sulfuric acid	90%

: 556-64-9
methyl thiocyanate

: 111-50-2
Adipic acid dichloride

: 125077-72-7
2,2'-(1,4-Butandiyl)bis<4,6-bis(methylthio)-1,3,5-oxadiazinium>-dihexachloroantimonat(V)

Conditions

Conditions	Yield
With antimonypentachloride In tetrachloromethane for 2h; Ambient temperature;	90%

Methyl thiocyanate Chemical Properties

Molecule structure of Methyl thiocyanate (CAS NO.556-64-9) :

IUPAC Name: methyl thiocyanate
Molecular Weight: 73.11692 g/mol
Molecular Formula: C₂H₃NS
Density: 1.061 g/cm³
Melting Point: -5 °C
Boiling Point: 123.1 °C at 760 mmHg
Flash Point: 38.3 °C
Index of Refraction: 1.47
Molar Refractivity: 19.22 cm³
Molar Volume: 68.9 cm³
Polarizability: 7.62×10^-24 cm³
Surface Tension: 37.6 dyne/cm
Enthalpy of Vaporization: 36.1 kJ/mol
log P (octanol-water): 0.730
Water Solubility: 4.27E+04 mg/L
Vapor Pressure: 12.1 mm Hg
Henry's Law Constant: 4.38E-05 atm-m³/mole
Atmospheric OH Rate Constant: 1.06E-12 cm³/molecule-sec
XLogP3-AA: 0.9
H-Bond Acceptor: 1
Exact Mass: 72.99862
MonoIsotopic Mass: 72.99862
Topological Polar Surface Area: 23.8
Heavy Atom Count: 4
Complexity: 41.2
Canonical SMILES: CSC#N
InChI: InChI=1S/C2H3NS/c1-4-2-3/h1H3
InChIKey: VYHVQEYOFIYNJP-UHFFFAOYSA-N
Storage Temp.: poison room
Merck: 6127
EINECS: 209-134-6

Methyl thiocyanate Uses

Methyl thiocyanate (CAS NO.556-64-9) is used as an agricultural insecticide, a fumigant and as a research chemical. No evidence of commercial production in the U.S. It is also used for the synthesis of pesticides, medicine and other fine chemicals.

Methyl thiocyanate Production

By the reaction of dimethyl sulfate and potassium cyanide sulfur derived. Be KSCN dissolved in water, dropwise dimethyl sulfate to control the temperature below 60 °C, about 3h dropping finish. And then continue stirring 2h. Place overnight. Taken by the water reservoir while the system was finished washing.

Methyl thiocyanate Toxicity Data With Reference

1.	orl-rat LD50:60 mg/kg	85JCAE Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,1036.
2.	ipr-mus LD50:23 mg/kg	PCBPBS Pesticide Biochemistry and Physiology. 2 (1972),95.
3.	ivn-mus LD50:18 mg/kg	CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#02864 .
4.	orl-cat LDLo:8500 µg/kg	MEIEDD Merck Index. 11 (1989),963.
5.	scu-rbt LDLo:20 mg/kg	AEPPAE Naunyn-Schmiedebergs Archiv fuer Experimentelle Pathologie und Pharmakologie. 150 (1930),257.

Methyl thiocyanate Consensus Reports

Reported in EPA TSCA Inventory. EPA Extremely Hazardous Substances List.

Methyl thiocyanate Safety Profile

Poison by ingestion, intravenous, and subcutaneous routes. When heated to decomposition it emits very toxic fumes of NO_x and SO_x. See also THIOCYANATES.
Hazard Codes: Toxic T
Risk Statements: 23/24/25-10-36/37
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.
R10:Flammable.
R36/37:Irritating to eyes and respiratory system.
Safety Statements: 28A-27-26-16-45-36/37/39
S28:After contact with skin, wash immediately with plenty of soap-suds.
S27:Take off immediately all contaminated clothing.
S16:Keep away from sources of ignition.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN1992
RTECS: XL1575000
HazardClass: 3
PackingGroup: III
Hazardous Substances Data: 556-64-9(Hazardous Substances Data)

Methyl thiocyanate Specification

Methyl thiocyanate (CAS NO.556-64-9) is also called 4-03-00-00327 (Beilstein Handbook Reference) ; AI3-16178 ; BRN 1098357 ; HSDB 5691 ; Methane, thiocyanato- ; Methyl rhodanate ; Methyl sulfocyanate ; Methylrhodanid
; Methylthiokyanat ; NSC 9368 ; Thiocyanic acid, methyl ester . Methyl thiocyanate (CAS NO.556-64-9) is colorless liquid with an odor of onions and is very slightly soluble in water. 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. Methyl thiocyanate is highly toxic if ingested. It is a rapidly acting poison. Methyl thiocyanate (CAS NO.556-64-9) is 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. So the storage environment should be ventilate, low-temperature and dry. Keep Methyl thiocyanate (CAS NO.556-64-9) separate from oxidants, acids, and food additives.

Product Name

Methyl thiocyanate

Synthetic route

Methyl thiocyanate Chemical Properties

Methyl thiocyanate Uses

Methyl thiocyanate Production

Methyl thiocyanate Toxicity Data With Reference

Methyl thiocyanate Consensus Reports

Methyl thiocyanate Safety Profile

Methyl thiocyanate Specification

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