Ethyl chloroformate

  • Carboncloridic acid ethyl ester
  • Chloroformic acid ethyl ester
  • Ethyl chlorocarbonate
Formula
ClCOOC2H5
Structure
Description
A colorless liquid with a pungent odor.
Uses
Chemical intermediate for ore flotation agents, diethyl carbonate, isocyanates, polymers.

Registry Numbers and Inventories.
CAS
541-41-3
EC (EINECS/ELINCS)
208-778-5
EC Index Number
607-020-00-4
EC Class
Highly flammable; Very toxic; Harmful; Corrosive
R 11 22 26 34
S 9 16 26 33 36/37/39 45
RTECS
LQ6125000
RTECS class
Other
UN (DOT)
1182
Merck
12,3831
Beilstein/Gmelin
385653
Beilstein Reference
4-03-00-00023
Swiss Giftliste 1
G-1388
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C3H5ClO2
Formula mass
108.53
Melting point, °C
-81
Boiling point, °C
93
Vapor pressure, mmHg
41 (25 C)
Vapor density (air=1)
3.7
Density
1.1596 g/cm3 (4 C)
Solubility in water
Insoluble, slowly decomposes
Viscosity
0.56 cp (20 C)
Surface tension
27.5 g/s2
Refractive index
1.3963 (15.1 C)
Heat of vaporization
37.86 kJ/mol
Heat of combustion
-1722 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator/flammables. Keep containers tightly closed.
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. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not ingest or inhale. 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. A vapor suppressing foam may be used to reduce vapors.
Disposal code
11
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
10
Autoignition, °C
450
Upper exp. limit, %
12.6
Lower exp. limit, %
3.7
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Do NOT use water directly on fire. Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Contact professional fire-fighters immediately.
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
Toxic chlorine and phosgene gases may be formed in fires.
Health
4
 
Flammability
3
 
 
Reactivity
1
 

Health.
Poison_Class
2
Exposure effects
   Ingestion
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause burns to the gastrointestinal tract.
   Inhalation
May be fatal if inhaled. May cause burns to the respiratory tract. Causes upper respiratory tract irritation. Can produce delayed pulmonary edema.
   Skin
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Causes skin irritation and possible burns.
   Eyes
Lachrymator. Causes severe eye irritation and possible burns.

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.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. 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. Wash clothing before reuse.
   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
1182
Response guide
Hazard class
6.1
PRTC
T
Packing Group
I
 
USCG CHRIS Code
ECF
 
HS Code
2915 90 20
 
Std. Transport #
4921020