3-Bromopentane

Synonym(s):3-Pentyl bromide

CAS NO.：1809-10-5
Empirical Formula: C5H11Br
Molecular Weight: 151.04
MDL number: MFCD00000158
EINECS: 217-314-0
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-27 17:23:16

What is 3-Bromopentane?

Chemical properties

Clear pale yellow liquid

The Uses of 3-Bromopentane

3-Bromopentane is a glass forming liquid used in the preparation of 2-(1-ethyl-propoxy)-isoindole-1,3-dione. Further, it is employed in organic synthesis.

Preparation

Isomerically pure 3-bromopentane could be prepared from tri-1-ethylpropyl phosphite and hydrogen bromide and solvolysed in 60% aqueous ethanol. The detection of about 1% rearrangement products in both acid and weakly alkaline conditions supports the view that carbonium ion intermediates are formed in the reaction of at least a proportion of the molecules[1].

General Description

3-Bromopentane is a glass forming liquid. The dielectric relaxation of 3-bromopentane was studied.

References

[1] H. R. Hudson, D. Ragoonanan. “Rearrangement in the solvolysis of 3-bromopentane in 60% aqueous ethanol.” Journal of The Chemical Society B: Physical Organic 10 1 (1970): 1755–1758.

Properties of 3-Bromopentane

Melting point:	-126.2°C
Boiling point:	118-119 °C (lit.)
Density	1.216 g/mL at 25 °C (lit.)
refractive index	n20/D 1.445(lit.)
Flash point:	65 °F
storage temp.	Sealed in dry,Room Temperature
solubility	Miscible with ethanol, ether, benzene and chloroform.
form	Liquid
color	Clear pale yellow
BRN	1730967
Dielectric constant	8.3699999999999992
InChI	InChI=1S/C5H11Br/c1-3-5(6)4-2/h5H,3-4H2,1-2H3
CAS DataBase Reference	1809-10-5(CAS DataBase Reference)
EPA Substance Registry System	Pentane, 3-bromo- (1809-10-5)

Safety information for 3-Bromopentane

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H225:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.