Allyl chloroformate

  • Allyl chlorocarbonate
Formula
C4H5ClO2
Structure
Description
A colorless liquid with a pungent odor.
Uses
Used as intermediates in synthesis of numerous compounds chloroformic esters.

Registry Numbers and Inventories.
CAS
2937-50-0
EC (EINECS/ELINCS)
220-916-6
R 10 22 26 34
S 26 28 36/37/39 45
RTECS
LQ5775000
RTECS class
Other
UN (DOT)
1722
Beilstein/Gmelin
773915
Beilstein Reference
4-03-00-00029
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C4H5ClO2
Formula mass
120.54
Melting point, °C
-80
Boiling point, °C
110
Vapor pressure, mmHg
27 (25 C)
Vapor density (air=1)
4.2
Odor Threshold Odor threshold 1.4 ppm
Critical temperature
301
Critical pressure
39.0
Density
1.16 g/cm3 (0 C)
Solubility in water
Slightly soluble
Viscosity
0.71 mPa-s
Surface tension
25 g/s2
Refractive index
1.422 (20 C)
Partition coefficient, pKow
1.74
Heat of vaporization
34.7 kJ/mol
Heat of combustion
-2703 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Refrigerator/flammables. Store protected from moisture. Vent periodically
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. 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 get on skin or in eyes. Do not ingest or inhale. Use with adequate ventilation. Do not allow contact with water. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam.
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 minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
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. Use a spark-proof tool. Provide ventilation. Do not get water inside containers. A vapor suppressing foam may be used to reduce vapors.
Stability
Stable under normal temperatures and pressures. May decompose on exposure to moist air or water.
Incompatibilities
Strong oxidizing agents, acids, strong bases, alcohols, amines, moisture, water.
Decomposition
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide, chloride fumes, chloroformic acid, allyl alcohol.

Fire.
Flash Point,°C
31
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. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Do NOT use water directly on fire. Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Water may be ineffective. Do NOT get water inside containers. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.
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
When heated to decomposition, emits highly toxic phosgene gas.
Health
4
 
Flammability
3
 
 
Reactivity
1
 

Health.
Exposure limit(s)
OEL-RUSSIA:STEL 0.4 mg/m3;Skin
Exposure effects
Effects may be delayed.
   Ingestion
Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. Ingestion of large amounts may cause CNS depression.
   Inhalation
May be fatal if inhaled. Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.
   Skin
Causes skin burns. May cause cyanosis of the extremities. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
   Eyes
Causes eye burns. Lachrymator. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. May cause methemoglobinemia, cyanosis, convulsions, and death. Induce vomiting only when instructed to do so by a physician.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration 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.
   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
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. 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
1722
Response guide
Hazard class
6.1
PRTC
T
Packing Group
I
 
USCG CHRIS Code
ACF
 
Std. Transport #
4923113 4930001