DIMETHYLBORON BROMIDE

DIMETHYLBORON BROMIDE Property

Melting point:

-129°C

Boiling point:

31-32°C

Density 

1,238 g/cm³

vapor pressure 

10.4 psi ( 20 °C)

Flash point:

-37°C

refractive index 

1.399

storage temp. 

2-8°C

solubility 

sol dichloromethane, 1,2-dichloroethane, hexane.

form 

Liquid

Sensitive 

Air & Moisture Sensitive

BRN 

1730828

Safety

Hazard Codes 

F,C

Risk Statements 

17-34

Safety Statements 

17-26-36/37/39-45-27-16

RIDADR 

3203

WGK Germany 

3

HazardClass 

4.2

PackingGroup 

I

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H250Catches fire spontaneously if exposed to air

H314Causes severe skin burns and eye damage

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P231+P232Handle under inert gas. Protect from moisture.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P370+P378In case of fire: Use … for extinction.

DIMETHYLBORON BROMIDE Chemical Properties,Usage,Production

Reactivity Profile

Dimethylboron bromide is a mild Lewis acid capable of selective cleavage of ethers and acetals; deoxygenation of sulfoxides.

Synthesis

Dimethylboron bromide can be conveniently prepared by treating Tetramethylstannane with Boron Tribromide.

Precautions

Dimethylboron bromide is a flammable liquid, moisture sensitive; typically stored and dispensed as a 1.5-2 M solution in dichloromethane or dichloroethane. Solutions of this sort are stable for a period of months if stored at -15 °C and properly protected from moisture.