Chloromethyl chloroformate

  • Carbonochloridic acid, chloromethyl ester
  • Formic acid, chloro-, chloromethyl ester
  • Chloromethoxycarbonyl chloride
Formula
C2H2Cl2O2
Structure
Description
Clear, colorless liquid with a choking odor.
Uses
Used to make other chemicals.

Registry Numbers and Inventories.
CAS
22128-62-7
EC (EINECS/ELINCS)
244-793-3
R 22 23 34 36/37
S 26 36/37/39 45
UN (DOT)
2745
Beilstein/Gmelin
506426
Beilstein Reference
4-03-00-00030
Swiss Giftliste 1
G-5468

Properties.
Formula
C2H2Cl2O2
Formula mass
128.94
Melting point, °C
-59
Boiling point, °C
107-108
Critical temperature
337
Critical pressure
45.1
Density
1.449 g/cm3 (20 C)
Solubility in water
Slightly soluble
Refractive index
1.4286 (22 C)
Partition coefficient, pKow
1.38

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard.
Stability
No data.
Incompatibilities
Incompatible with strong oxidizing agents, alcohols, bases (including amines) May react vigorously or explosively

Fire.
Flash Point,°C
95
Fire fighting
Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Health.
Poison_Class
1
Exposure effects
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns, or death.
   Skin
See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   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
2745
Response guide
Hazard class
6.1
Packing Group
II
 
Std. Transport #
4921208