Choline

  • Bilineurine
  • (2-Hydroxyethyl)trimethylammonium
  • Ethanaminium, 2-hydroxy-N,N,N-trimethyl-
Formula
[HOCH2CH2N+(CH3)3]
Structure
Description
Clear, light yellow, viscous solution with an amine-like odor. 45% by weight choline in methanol -- stabilized with 0.5% paraformaldehyde.

Registry Numbers and Inventories.
CAS
62-49-7
EC (EINECS/ELINCS)
200-535-1
RTECS
FZ9625000
RTECS class
Other
UN (DOT)
2924
Merck
12,2259
Beilstein/Gmelin
1736748
Beilstein Reference
3-04-00-00651
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H14NO
Formula mass
104.11
Boiling point, °C
113
Density
0.94 g/ml
Solubility in water
Soluble

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Flammables-area. Refrigerator/flammables.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate safety goggles, protective clothing and gloves.
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
Make no contact with the spilled material. Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Avoide contact with strong oxidizing agents and acids.
Decomposition
Nitrogen oxides, carbon monoxide and carbon dioxide are produced upon decomposition.

Fire.
Flash Point,°C
-33
Autoignition, °C
349
Fire fighting
Wear a self-contained breathing apparatus inpressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Flammable Liquid.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
Poison by ingestion. Causes gastrointestinal tract burns.
   Inhalation
Causes chemical burns to the respiratory tract.
   Skin
Causes burns
   Eyes
Causes burns

First aid
 
   Ingestion
Get medical aid immediately. Wash mouth out with water.
   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 lids. Get medical aid immediately.

Transport.
UN number
2924
Response guide
Hazard class
3
Packing Group
I; II; III