Isobutyl chloroformate

  • Carbonochloridic acid, 2-methylpropyl ester
Formula
ClCOOCH2CH(CH3)2
Structure
Description
Clear liquid with an pungent, unpleasant odor.

Registry Numbers and Inventories.
CAS
543-27-1
EC (EINECS/ELINCS)
208-840-1
EC Class
flammable, toxic, corrosive
R 10 23 34
S 26 36/37/39 45
UN (DOT)
2742
Merck
13,5156
Beilstein/Gmelin
956590
Beilstein Reference
4-03-00-00026
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C5H9ClO2
Formula mass
136.58
Melting point, °C
-80
Boiling point, °C
128.7
Vapor pressure, mmHg
9.9 (25 C)
Density
1.053 g/cm3 (15 C)
Solubility in water
May decompose
Refractive index
1.4071 (18 C)
Partition coefficient, pKow
2.32
Heat of vaporization
36.8 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Keep refrigerated. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Loosen closure cautiously before opening. Open Periodically Vent periodically
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Do not allow water to get into the container because of violent reaction. 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. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. 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. Remove all sources of ignition. A vapor suppressing foam may be used to reduce vapors. Do not get water on spilled substances or inside containers.
Disposal code
9
Stability
Stable under normal shipping and handling conditions. However, may decompose if exposed to moist air or water.
Incompatibilities
Acids, can react with rust from corroded equipment.
Decomposition
Hydrogen chloride, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
28
Fire fighting
Use water in flooding quantities as fog. Use foam, dry chemical, or carbon dioxide. Keep run-off water out of sewers and water sources. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
HIGHLY FLAMMABLE.
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. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
Causes gastrointestinal tract burns.
   Inhalation
Causes chemical burns to the respiratory tract. May be harmful if inhaled.
   Skin
Causes skin burns.
   Eyes
Causes eye burns. Lachrymator.

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.
   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. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number
2742
Response guide
Hazard class
6.1
PRTC
T
Packing Group
I
 
HS Code
2915 90 20
 
Std. Transport #
4921211