1,8-Dibromooctane

Synonym(s):Octamethylene dibromide

CAS NO.：4549-32-0
Empirical Formula: C8H16Br2
Molecular Weight: 272.02
MDL number: MFCD00000277
EINECS: 224-912-5
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:14:37

What is 1,8-Dibromooctane?

Chemical properties

colourless to pale yellow liquid. insoluble in water.

The Uses of 1,8-Dibromooctane

1,8-Dibromooctane is used as an additive in the preparation poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]]:[6,6]-phenylC71-butyric acid methyl ester, which finds application in the fabrication of organic photovoltaics (OPVs). Further, it is used in the preparation of (1,4-bis-(8-bromooctyloxy)-benzene).

What are the applications of Application

1,8-Dibromooctane is used as a reagent in the synthesis of novel 7-aminoalkyl-substituted flavonoid derivatives as potential cholinesterase inhibitors and 3,3’-(Octane-1,8-diyl)bis(1-ethyl-imidazolium) bromide.

Synthesis Reference(s)

The Journal of Organic Chemistry, 30, p. 780, 1965 DOI: 10.1021/jo01014a031

Synthesis

1,8-Dibromooctane was prepared by the reaction of cyclooctene with sulfuric acid and hydrobromination under the catalyst.

Properties of 1,8-Dibromooctane

Melting point:	12-16 °C (lit.)
Boiling point:	270-272 °C (lit.)
Density	1.477 g/mL at 25 °C (lit.)
refractive index	n20/D 1.498(lit.)
Flash point:	>230 °F
storage temp.	Sealed in dry,Room Temperature
solubility	Chloroform (Sparingly), Hexanes (Slightly)
form	Liquid
color	Clear yellow
Specific Gravity	1.465
Water Solubility	Insoluble
BRN	1698114
Dielectric constant	7.4299999999999997
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.
CAS DataBase Reference	4549-32-0(CAS DataBase Reference)
NIST Chemistry Reference	Octane, 1,8-dibromo-(4549-32-0)
EPA Substance Registry System	Octane, 1,8-dibromo- (4549-32-0)

Safety information for 1,8-Dibromooctane

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.