1,2-dibromopropane

Structural formula
	Structural formula without stereochemistry
General
Surname	1,2-dibromopropane
other names	( RS ) -1,2-dibromopropane; ( R ) -1,2-dibromopropane; ( S ) -1,2-dibromopropane; (±) -1,2-dibromopropane; rac -1,2-dibromopropane;
Molecular formula	C 3 H 6 Br 2
Brief description	light yellow liquid
External identifiers / databases
EC number	201-139-1
ECHA InfoCard	100.001.036
PubChem	6553
ChemSpider	6305
Wikidata	Q161469
properties
Molar mass	201.89 g · mol -1
Physical state	liquid
density	1.93 g cm −3
Melting point	−55.49 ° C
boiling point	141.9 ° C
Vapor pressure	10.5 h Pa (25 ° C); 14 hPa (30 ° C); 38 hPa (50 ° C);
solubility	poor in water (1.43 g l −1 at 20 ° C)
Refractive index	1.5201 (20 ° C)
safety instructions
H and P phrases	H: 226-302-332
	P: ?
Thermodynamic properties
ΔH f 0	−113.6 kJ / mol
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

1,2-Dibromopropane is an organic chemical compound. It is an aliphatic and the simplest chiral hydrocarbon compound that contains bromine .

Extraction and presentation

1,2-Dibromopropane is formed when propene reacts with bromine :

This is an addition reaction in which racemic 1,2-dibromopropane is formed.

properties

1,2-Dibromopropane is a flammable, volatile, light yellow liquid that is sparingly soluble in water. It has a refractive index of 1.5201 (20 ° C)

Stereoisomerism

1,2-Dibromopropane has a stereocenter , so there are two enantiomers, ( S ) -1,2-Dibromopropane and ( R ) -1,2-Dibromopropane.

( S ) -1,2-dibromopropane (top) and
( R ) -1,2-dibromopropane (bottom)

If 1,2-dibromopropane is spoken of without further prefixes , the racemate is usually [( RS ) -1,2-dibromopropane] - a 1: 1 mixture of ( S ) -1,2-dibromopropane and ( R ) -1 , 2-dibromopropane - meant.

use

1,2-Dibromopropane is an intermediate for the synthesis of drugs and other organic compounds. It is also used as a solvent .

safety instructions

The vapors of 1,2-dibromopropane can form an explosive mixture with air ( flash point 35 ° C).

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Entry on 1,2-dibromopropane in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
↑ ^a ^b David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-146.
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-24.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Entry on 1,2-dibromopropane in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[CRC90_3_146-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-146.

[CRC90_5_24-3] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-24.