Butyl bromide
CAS Number
109-65-9
EC Number
203-691-9
What is Butyl bromide?
Butyl bromide (CAS 109-65-9), also known as 1-bromobutane, is a reactive alkyl halide used as a chemical building block and alkylating agent in pharmaceutical and industrial manufacturing.
Where is Butyl bromide used?
- Pharmaceutical manufacturing: synthesis of active pharmaceutical ingredients and intermediates requiring controlled alkylation
- Polymers and plastics: precursor in catalyst systems and flame retardant additives for thermoplastics
- Textile and leather processing: intermediate in finishing agents and preservation compounds
- Grignard reactions: reagent forming butylmagnesium bromide for organic synthesis
- Its primary commercial role is introducing a butyl group into target molecules during synthesis.
Commercial specifications
- Drums and intermediate bulk containers
- High-purity grades for pharmaceutical intermediates; defined purity thresholds and low water content
Other Names (Synonyms)
1-Bromobutane|N-BUTYL BROMIDE|Butane, 1-bromo-|1-Butyl bromide|SAV6Y78U3D
What are the physical properties of Butyl bromide?
Melting Point -112 °C
Boiling Point 101.3 °C @ Press: 760 Torr
Density 1.2686 g/cm³ @ Temp: 25 °C
Flash Point 23 °C
Appearance clear colorless to slightly yellow liquid
Color Clear colorless to light yellow
Odor characteristic odor
Form Liquid
Water Solubility 0.608 g/L (30 ºC)
Vapor Pressure 150 mm Hg ( 50 °C)
Refractive Index n 20/D 1.439(lit.)
Log P 2.75
How is Butyl bromide classified and handled safely? Learn More
Danger
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
Hazard Statements
H225 Highly Flammable liquid and vapor
H226 Flammable liquid and vapor
H315 Causes skin irritation
H319 Causes serious eye irritation
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
Which trade and regulatory codes apply to Butyl bromide?
HS Code 29033036
UN Number 1126
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 2