2,2-Dibromopropane Chemical Properties

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 Information

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

MSDS

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2,2-Dibromopropane Usage And Synthesis

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.

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