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Methyl thiocyanate

Methyl thiocyanate
Methyl thiocyanate
Chemical Name:
Methyl thiocyanate
CH3SCN;Methylrhodanid;methylrhodanate;Methylthiokyanat;Thiocyanomethane;METHYL RHODANIDE;METHYL THIOCYANATE;thiocyanato-methan;methylsulfocyanate;Methylsalfocyanate
Molecular Formula:
Formula Weight:
MOL File:

Methyl thiocyanate Properties

Melting point:
-5 °C
Boiling point:
131 °C
refractive index 
Flash point:
38 °C
storage temp. 
Poison room
Clear colorless to light yellow
Moisture Sensitive
CAS DataBase Reference
556-64-9(CAS DataBase Reference)
NIST Chemistry Reference
Thiocyanic acid, methyl ester(556-64-9)
EPA Substance Registry System
Thiocyanic acid, methyl ester(556-64-9)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T
Risk Statements  23/24/25-10-36/37
Safety Statements  28A-27-26-16-45-36/37/39
RTECS  XL1575000
HazardClass  3
PackingGroup  III
Hazardous Substances Data 556-64-9(Hazardous Substances Data)
Toxicity LD50 i.p. in mice: 315 nmoles/g (Ohkawa)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P311 Call a POISON CENTER or doctor/physician.
P320 Specific treatment is urgent (see … on this label).
P330 Rinse mouth.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Methyl thiocyanate price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.21841 Methyl thiocyanate 556-64-9 1EA $34.5 2017-11-08 Buy
Sigma-Aldrich 722197 Methyl thiocyanate 97% 556-64-9 25g $48.2 2018-11-20 Buy
TCI Chemical T0201 Methyl Thiocyanate >98.0%(GC) 556-64-9 25mL $22 2017-12-01 Buy
TCI Chemical T0201 Methyl Thiocyanate >98.0%(GC) 556-64-9 100mL $62 2017-12-01 Buy
Alfa Aesar H27879 Methyl thiocyanate, 99% 556-64-9 5ml $24.8 2018-11-13 Buy

Methyl thiocyanate Chemical Properties,Uses,Production

Chemical Properties



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.

Methyl thiocyanate Preparation Products And Raw materials

Raw materials

Preparation Products

Methyl thiocyanate Suppliers

Global( 46)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32764 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40399 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30308 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24654 81
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44192 61
Syntechem Co.,Ltd Please Email
E-Mail Inquiry China 13092 57
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 QQ:452520369
+86 (573) 82222643 China 11846 57
Thermo Fisher Scientific 800-810-5118
+86-10-84193589 China 17573 75
Beijing innoChem Science & Technology Co.,Ltd. 400-810-7969 010-59572699
010-59572688 China 6216 55

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