Methyl dichloroacetate

  • Acetic acid, dichloro-, methyl ester
  • 1,1-Dichloro-2-methoxy-2-oxoethane
  • Dichloroacetic acid methyl ester
  • Methyl 2,2-dichloroacetate
Formula
Cl2CHCOOCH3
Structure
Description
A colorless liquid with an ethereal odor.
Uses
Used to make other chemicals.

Registry Numbers and Inventories.
CAS
116-54-1
EC (EINECS/ELINCS)
204-146-8
EC Class
irritant
R 36/37/38
RTECS
AG6625000
RTECS class
Other
UN (DOT)
2299
Beilstein/Gmelin
1747542
Beilstein Reference
4-02-00-00501
Swiss Giftliste 1
G-8944
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C3H4Cl2O2
Formula mass
142.97
Melting point, °C
-52
Boiling point, °C
143
Vapor pressure, mmHg
35 (20 C)
Vapor density (air=1)
4.93
Density
1.3774 g/cm3 (20 C)
Solubility in water
Reacts
Surface tension
34 g/s2 (20 C)
Refractive index
1.4429 (20 C)

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Use with adequate ventilation. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. 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. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation. Do not get water inside containers.
Disposal code
2
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, reducing agents, acids, bases.
Decomposition
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
70
Autoignition, °C
484
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Combustible Liquid. Containers may explode when heated. Extinguishing media: Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Vapors form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff.
Combustion products
Produces toxic fumes of phosgene and HCl.
Health
3
 
Flammability
1
 
 
Reactivity
2
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Causes gastrointestinal tract burns.
   Inhalation
Causes respiratory tract irritation. Causes chemical burns to the respiratory tract. Vapors may cause dizziness or suffocation.
   Skin
Causes second and third degree burns on short contact, especially if skin is moist or wet.
   Eyes
Causes eye burns.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
   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. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
2299
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
MDC
 
HS Code
2915 40 00
 
Std. Transport #
4925231 4921893