Sulfuryl fluoride,methyl ester cas no:421-20-5

NameSulfuryl fluoride,methyl ester
CAS421-20-5
SynonymsFluorosulfuricacid, methyl ester (8CI,9CI); Methyl fluorosulfate (7CI); Methyl fluosulfonate(6CI); Magic Methyl; Methyl fluorosulfonate
EINECS(EC#)207-004-3
Molecular FormulaCH3 F O3 S
Molecular Weight114.10

refractive index1.363

Hazard Toxic. Strong irritant to tissue, inhalation of fume must be avoided. Reacts with water, steam, and acids, evolving corrosive vapor.
Risk R34
Safety

The Hazard Codes of Methyl fluorosulfate (CAS NO.421-20-5): C
Risk Statements:R34:Causes burns.
Safety Statements:S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 

Poison by inhalation and ingestion. Moderately toxic by skin contact. A skin, mucous membrane, and severe eye irritant. Mutation data reported. Reacts with water, steam, or acids to produce toxic and corrosive fumes. When heated to decomposition it emits toxic fumes of F⁻ and SO_x.

The toxicity of Methyl fluorosulfate (CAS NO.421-20-5): 

1.		eye-rbt 100 mg/4 sec rns SEV		AIHAAP    American Industrial Hygiene Association Journal. 40 (1979),600.
2.		mmo-sat 4 µg/plate		MUREAV    Mutation Research. 51 (1978),285.
3.		ihl-rat LC50:5 ppm/1H		AIHAAP    American Industrial Hygiene Association Journal. 40 (1979),600.
4.		orl-mus LD50:112 mg/kg		AIHAAP    American Industrial Hygiene Association Journal. 40 (1979),600.
5.		skn-rbt LDLo:455 mg/kg		AIHAAP    American Industrial Hygiene Association Journal. 40 (1979),600.