2,2-Dibromopropane Property

Melting point:

-44.69°C (estimate)

Boiling point:

114 °C (740 mmHg)

Density 

1.78

refractive index 

1.495-1.499

Flash point:

113 °C

form 

Liquid

color 

Colorless to pale yellow

EPA Substance Registry System

Propane, 2,2-dibromo- (594-16-1)

Safety

Hazard Codes 

Xn,Xi

Risk Statements 

36/37/38-20/21/22

Safety Statements 

36/37/39-26-37/39-24/25

RIDADR 

2810

TSCA 

Yes

HazardClass 

6.1(b)

PackingGroup 

III

HS Code 

29033990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

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

P405Store locked up.

2,2-Dibromopropane Chemical Properties,Usage,Production

Chemical Properties

clear colorless to light yellow liquid

Uses

2,2-dibromopropane is used in organic synthesis. dimethyl isopropenylsuccinate was formed as a by-product in the reaction of 2,2-dibromopropane.

Preparation

2,2-Dibromopropane synthesis: Ethyl bicyclic phosphite (3.5g, 0.025mole) and acetone (1.5g, 1. 9ml, 0.025mole) were dissolved in thirty ml benzene in a one-neck 100ml 19/22 standard taper flask and the solution was cooled to 5° by an ice bath. The solution was stirred by a magnetic stirrer and bar, and to it was added bromine (4g, 0.025mole) dropwise from a dropping funnel. The reaction proceeded immediately as no dibromide intermediate appeared, and after completion of halogen addition the solution was stirred for half an hour in the cold, and then analyzed for dihaloalkane . Analysis on the Beckman GC-2A Gas Chr omatograph indicated the presence of 2,2-Dibromopropane, and the yield was calculated as previously described. Yield: 1.56g, 31%.
2,2-dibromopropane is also prepared by Hydrogen bromide and propyne.