Contact us: +91 9550333722 040 - 40102781
Structured search
India
Choose your country
Different countries will display different contents
Try our best to find the right business for you.
My chemicalbook

Welcome back!

HomeProduct name list1,4-Dibromopentane

1,4-Dibromopentane

  • CAS NO.:626-87-9
  • Empirical Formula: C5H10Br2
  • Molecular Weight: 229.94
  • MDL number: MFCD00000153
  • EINECS: 210-967-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-12-28 18:13:10
1,4-Dibromopentane Structural

What is 1,4-Dibromopentane?

Chemical properties

clear colorless to light yellow-brown liquid with a wine smell.

The Uses of 1,4-Dibromopentane

1,4-Dibromopentane is used in the preparation of pharaoh ant trail pheromone stereoisomer, indolizidine alkaloid. It is also involved in the preparation 1,2-dimethyl-1-phenylcyclopentane and boc-L-2-amino-6-bromoheptanoic acid.

Preparation

1,4-Dibromopentane is synthesized by ring-opening bromination of 2-methyltetrahydrofuran with hydrobromic acid and sulfuric acid. First, add hydrobromic acid into the reaction pot for cooling, slowly add 2-methyltetrahydrofuran and sulfuric acid in turn under stirring, and finish the addition when the temperature does not exceed 40°C. The temperature was raised to 60°C, reacted for 2h, and then reacted at 80-85°C for 4h. After cooling, the bromide was separated and washed with water until neutral to obtain 1,4-dibromopentane as an oily substance. Yield 92.5%.

Synthesis Reference(s)

Journal of the American Chemical Society, 74, p. 917, 1952 DOI: 10.1021/ja01124a016

Properties of 1,4-Dibromopentane

Melting point: -34.4 °C (lit.)
Boiling point: 98-99 °C/25 mmHg (lit.)
Density  1.687 g/mL at 25 °C (lit.)
refractive index  n20/D 1.508
Flash point: >110°C
storage temp.  2-8°C
form  clear liquid
color  Colorless to Light orange to Yellow
Specific Gravity 1.687
Water Solubility  Insoluble in water.
BRN  605295
CAS DataBase Reference 626-87-9(CAS DataBase Reference)
NIST Chemistry Reference Pentane, 1,4-dibromo-(626-87-9)
EPA Substance Registry System Pentane, 1,4-dibromo- (626-87-9)

Safety information for 1,4-Dibromopentane

Signal word Warning
Pictogram(s)
ghs
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.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
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.

Computed Descriptors for 1,4-Dibromopentane

Related products of tetrahydrofuran

You may like

Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.