2-Chlorobutanoic acid

  • (RS)-2-Chlorobutyric acid
  • (RS)-a-Chlorobutyric acid
  • 2-Chlorobutyric acid
  • (+/-)-2-Chlorobutanoic acid
Formula
C4H7ClO2
Structure
Description
Clear, colorless liquid.

Registry Numbers and Inventories.
CAS
4170-24-5
EC (EINECS/ELINCS)
224-029-5
UN (DOT)
3265
Austrailia AICS
Listed

Properties.
Formula
C4H7ClO2
Formula mass
122.55
Melting point, °C
37
Boiling point, °C
203
Vapor pressure, mmHg
0.11 (25 C)
Critical temperature
402
Critical pressure
41.5
Density
1.1972 g/cm3 (20 C)
Solubility in water
82 g/L (25 C)
Refractive index
1.4401 (20 C)
pKa/pKb
2.95 (pKa)
Partition coefficient, pKow
0.832
Heat of vaporization
48.43 kJ/mol

Hazards and Protection.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Small spills/leaks
Mix with solid sodium bicarbonate. Flush spill area with copious amounts of water. Absorb on sand or vermiculite and place in closed containers for disposal.

Fire.
Flash Point,°C
77
Fire fighting
Extinguish with 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.
Hazards
Emits toxic fumes under fire conditions.

Health.
Exposure effects

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
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
3265
Response guide
Hazard class
8
Packing Group
III