Methyl 2-chloropropanoate

  • Propanoic acid, 2-chloro-, methyl ester
  • (+/-)-2-Chloropropionic acid methyl ester
  • Methyl DL-a-chloropropionate
Formula
CH3CHClCOOCH3
Structure
Description
A colorless liquid.

Registry Numbers and Inventories.
CAS
17639-93-9
EC (EINECS/ELINCS)
241-624-5
EC Class
flammable
R 10 34
S 26 36/37/39 45
RTECS
UE9100000
RTECS class
Other
UN (DOT)
2933
Beilstein/Gmelin
1421535
Beilstein Reference
4-02-00-00746
Swiss Giftliste 1
G-5899
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H7ClO2
Formula mass
122.55
Melting point, °C
-81
Boiling point, °C
127 - 129
Vapor pressure, mmHg
226 (20 C)
Vapor density (air=1)
4.22
Critical temperature
304
Critical pressure
37.3
Density
1.1402 g/cm3 (20 C)
Solubility in water
Soluble
Refractive index
1.42 (16.4 C)
Partition coefficient, pKow
0.98

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area. Store protected from moisture.
Handling
Use spark-proof tools and explosion proof equipment. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Use a spark-proof tool.
Disposal code
2
Stability
No data.
Incompatibilities
Oxidizing agents, reducing agents, acids, bases.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
36
Autoignition, °C
430
Upper exp. limit, %
13.9
Lower exp. limit, %
2.8
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Extinguishing media: Use foam, dry chemical, or carbon dioxide.
Fire potential
Flammable/combustible material.
Hazards
May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
   Ingestion
Causes gastrointestinal tract burns.
   Inhalation
Causes chemical burns to the respiratory tract. May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.
   Skin
Causes skin burns.
   Eyes
Causes eye burns. Lachrymator.

First aid
 
   Ingestion
Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2933
Response guide
Hazard class
3
Packing Group
III
 
HS Code
2915 90 80
 
Std. Transport #
4912326