Chromium(III) bromide

  • Chromic bromide
  • Chromium tribromide
  • Chromic bromide
Formula
CrBr3
Structure
Description
Dark green to black powder or lumps. Odorless.
Uses
Substance is used in catalysts for polymerization of olefins.

Registry Numbers and Inventories.
CAS
10031-25-1
EC (EINECS/ELINCS)
233-088-6
Merck
12,2276
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
Br3Cr
Formula mass
291.71
Melting point, °C
1130
Boiling point, °C
 
Density
4.68 g/cm3 (20 C)
Solubility in water
Slightly soluble

Hazards and Protection.
Storage
Store in a cool, dry location in a tightly sealed container.
Protection
Chemical safety goggles, rubber gloves, protective clothing.
Respirators
Dust respirator.
Small spills/leaks
Contain spill. Moisten with water to hold down dust and recover with absorbent such as sand and soda ash mixture. Sweep up for disposal to hazardous waste site only.
Stability
Stable at normal temperatures and pressures.

Fire.
Fire fighting
Fight surrounding fire. Wear SCBA
Hazards
Will sublime in general fire conditions. Avoid inhalation of fumes.

Health.
Exposure limit(s)
NIOSH PEL: 0.5 mg/m3 (as Cr.)
Exposure effects

First aid
 
   Ingestion
If swallowed, give water or milk and induce vomiting. See a physician.
   Skin
Wash throughly with water after contact. If irritation persists or sores develop, see a physician.
   Eyes
Irrigate with water for at least 15 minutes. See a physician.

Transport.