1,2-Dibromopropane

1,2-Dibromopropane

Skeletal formula of 1,2-dibromopropane with some implicit hydrogens shown
Names
Preferred IUPAC name 1,2-Dibromopropane [1]
Other names Propylene dibromide [2]
Identifiers
CAS Number	78-75-1  Y
3D model (JSmol)	Interactive image
Beilstein Reference	1718884
ChemSpider	6305  Y 557419 S N
ECHA InfoCard	100.001.036
EC Number	201-139-1
MeSH	1,2-dibromopropane
PubChem CID	6553 642201  S
RTECS number	TX8574000
UNII	FGB8O5N903  Y
UN number	1993
CompTox Dashboard (EPA)	DTXSID60870403
InChI InChI=1S/C3H6Br2/c1-3(5)2-4/h3H,2H2,1H3 Y Key: XFNJYAKDBJUJAJ-UHFFFAOYSA-N Y
SMILES CC(Br)CBr
Properties
Chemical formula	C3H6Br2
Molar mass	201.889 g·mol−1
Appearance	Colourless liquid
Density	1.937 g mL−1
Melting point	−55.5 °C; −67.8 °F; 217.7 K
Boiling point	139 to 143 °C; 282 to 289 °F; 412 to 416 K
Henry's law constant  (kH)	6.7 μmol Pa−1 kg−1
Refractive index (nD)	1.519
Thermochemistry
Heat capacity (C)	172.8 J K mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H226, H302, H332
Flash point	50 °C (122 °F; 323 K)
Lethal dose or concentration (LD, LC):
LD50 (median dose)	741 mg kg−1(oral, rat)
Related compounds
Related alkanes	1,1-Dibromoethane 1,2-Dibromoethane Tetrabromoethane 1,3-Dibromopropane 1,2,3-Tribromopropane
Related compounds	Mitobronitol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N  verify  (what is  YN ?) Infobox references

1,2-Dibromopropane, also known as propylene dibromide, is an organic compound with the formula CH₃CHBrCH₂Br. It is the simplest chiral hydrocarbon containing two bromine atoms.

1,2-Dibromo Propane also known as Propylene bromide is a naturally occurring organic compound. It is part of the Vicinal Dihalide family; it is highly unstable due to both torsional strain and its highly electrophilic nature.

(S)-1,2-Dibrompropane (above) and (R)-1,2-Dibrompropane (below)

Synthesis and reactions

1,2-Dibromopropane can be synthesized using electrophilic addition by reacting propene and bromine: ^[3]

C
_³H
_⁶ + Br₂ → C
_³H
_⁶Br
_²

References

1. "1,2-dibromopropane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 27 March 2005. Identification. Retrieved 21 June 2012.
2. "PubChem". pubchem.ncbi.nlm.nih.gov.
3. Clark, Jim (2000). "electrophilic addition - unsymmetrical alkenes and bromine". chemguide.co.uk. Retrieved 2025-11-05.