2-Chloroethyl methanesulfonate

  • 2-Chloroethyl mesylate
  • Methanesulfonic acid, 2-chloroethyl ester
  • Ethanol, 2-chloro-, methanesulfonate
Formula
C3H7ClO3S
Structure

Registry Numbers and Inventories.
CAS
3570-58-9
EC (EINECS/ELINCS)
222-672-6
20/21/22 40
23 36/37/39 45
RTECS
KK1960000
RTECS class
Agricultural Chemical and Pesticide; Drug; Mutagen; Reproductive Effector
UN (DOT)
2810
Beilstein/Gmelin
1754022
Beilstein Reference
4-04-00-00012

Properties.
Formula
C3H7ClO3S
Formula mass
158.61
Melting point, °C
5 - 6
Boiling point, °C
266
Vapor pressure, mmHg
0.014 (25 C)
Density
1.42 g/cm3 (20 C)
Solubility in water
Soluble
Refractive index
1.4545 (25 C)
Heat of vaporization
48.4 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Incompatibilities
Strong oxidizing agents, Strong bases.
Decomposition
Carbon monoxide, Carbon dioxide, Hydrogen chloride gas, Sulfur oxides.

Fire.
Flash Point,°C
123
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
Harmful. Harmful by inhalation, in contact with skin and if swallowed. Limited evidence of a carcinogenic effect. Possible mutagen.
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2810
Response guide
Hazard class
6.1