Dichloroacetic anhydride

  • Dichloroacetic acid anhydride
  • Acetic acid, dichloro-, anhydride
Formula
(Cl2CHCO)2O
Structure
Description
Clear, colorless liquid. Pungent odor.

Registry Numbers and Inventories.
CAS
4124-30-5
EC (EINECS/ELINCS)
223-924-8
EC Class
harmful, corrosive
R 21 35
S 26 36/37/39 45
RTECS
AG6300000
RTECS class
Primary Irritant
UN (DOT)
3265
Beilstein/Gmelin
512173
Beilstein Reference
4-02-00-00503
Swiss Giftliste 1
G-2222
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C4H2Cl4O3
Formula mass
239.87
Melting point, °C
29 - 31
Boiling point, °C
214
Vapor pressure, mmHg
0.15 (25 C)
Density
1.5808 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.4838 (20 C)
Partition coefficient, pKow
2.29
Heat of vaporization
45.1 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container. Corrosives area.
Handling
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
Eyes: Wear chemical goggles and a face shield if splashing is possible. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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.
Disposal code
4
Stability
No data.
Incompatibilities
Strong oxidizing agents.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
91
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. Expected to be a low ingestion hazard.
   Inhalation
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.
   Skin
May cause severe irritation and possible burns.
   Eyes
Contact with eyes may cause severe irritation, and possible eye burns.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Do NOT induce vomiting and seek IMMEDIATE MEDICAL ADVICE.
   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
3265
Response guide
Hazard class
8
Packing Group
I; II; III
 
HS Code
2915 90 80