Bromotrichlorosilane

Formula
SiCl3Br
Structure
Description
colorless liquid

Registry Numbers and Inventories.
CAS
13465-74-2
UN (DOT)
1295
Beilstein/Gmelin
2428 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
BrCl3Si
Formula mass
214.35
Melting point, °C
-62
Boiling point, °C
80
Vapor pressure, mmHg
95 (25 C)
Density
1.826 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
5.36
Heat of vaporization
30.8 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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 protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Wear a fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and prevent all contact with the material. Stop leak if you can do it without risk. DO NOT GET WATER on spilled substance or inside containers. FOR CHLOROSILANES, use AFFF alcohol-resistant medium expansion foam to reduce vapors. Cover with DRY earth, DRY sand, or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. For powders, cover spill with plastic sheet or tarp to minimize spreading and keep powder dry. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST.
Stability
No data.

Fire.
Flash Point,°C
-18
Fire fighting
DO NOT USE WATER OR FOAM. Small Fires: Dry chemical, soda ash, lime or sand. Large Fires: DRY sand, dry chemical, soda ash or lime or withdraw from area and let fire burn.
Hazards
Produce flammable and toxic gases on contact with water. May ignite on contact with water or moist air. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
3
 
 
Reactivity
3
 
 
Special
W

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Highly toxic: contact with water produces toxic gas, may be fatal if inhaled. Inhalation or contact with vapors, substance, or decomposition products may cause severe injury or death.
   Skin
See Inhalation.
   Eyes
May cause burns.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method 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. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, wipe from skin immediately. Flush with running water for at least 20 minutes.
   Eyes
Flush with running water for at least 20 minutes.

Transport.
UN number
1295
Response guide
Hazard class
4.3
Packing Group
I