METHYL FLUOROSULFONATE Property

Melting point:

-95°

Boiling point:

93 °C

Density 

1.45

refractive index 

nD20 1.3326

Flash point:

10℃

form 

liquid

Merck 

6075

CAS DataBase Reference

421-20-5(CAS DataBase Reference)

EPA Substance Registry System

Fluorosulfuric acid, methyl ester (421-20-5)

Safety

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39

RIDADR 

3265

RTECS 

LP0720000

Hazard Note 

Corrosive

Hazardous Substances Data

421-20-5(Hazardous Substances Data)

Toxicity

LD50 orally in mice: <112 mg/kg; LC50 1 hr for rats: 5-6 ppm (Hite)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H315Causes skin irritation

H318Causes serious eye damage

H330Fatal if inhaled

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

P243Take precautionary measures against static discharge.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P284Wear respiratory protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P370+P378In case of fire: Use … for extinction.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P403+P235Store in a well-ventilated place. Keep cool.

P405Store locked up.

METHYL FLUOROSULFONATE Chemical Properties,Usage,Production

Chemical Properties

Colorless liquid; ethereal odor.

Uses

In organic synthesis as methylating agent.

Hazard

Toxic. Strong irritant to tissue, inhalationof fume must be avoided. Reacts with water, steam,and acids, evolving corrosive vapor.