Description

1-Bromo-1-Butene is a versatile halogenated olefin building block, essential for introducing the butenyl moiety in complex organic syntheses. Its reactive bromine and alkene functionalities make it a critical intermediate for constructing carbon-carbon bonds and functionalizing molecules. This compound is primarily utilized by researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for applications ranging from active ingredient development to polymer modification.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Organic Synthesis Reagent: Employed in coupling reactions (e.g., Heck reaction) and as an alkylating agent in research and development.
• Polymer & Material Science: Acts as a monomer or co-monomer for modifying polymer chains and creating specialty materials.
• Liquid Crystal & Electronic Chemical Production: Utilized in the synthesis of advanced materials for display and electronic applications.
• Flavor & Fragrance Industry: A precursor in the synthesis of certain aroma compounds and flavoring agents.

Basic Information

Product Name	1-Bromo-1-Butene
CAS No.	31849-78-2
Molecular Formula	C₄H₇Br
Molecular Weight	135.00 g/mol
Synonyms	1-Butenyl bromide; But-1-en-1-yl bromide; 1-Butene, 1-bromo-; (1-Butenyl)bromide; 1-Bromobut-1-ene; NSC 60548; γ-Bromopropylethylene
EINECS	Contact for details

Quality Control

Our 1-Bromo-1-Butene is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including GC, NMR, and impurity profiling, to ensure high purity and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your research and production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and bases. Recommended storage temperature is between 2°C and 8°C to maximize stability. Keep container tightly sealed when not in use to prevent moisture ingress and volatility loss.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	1.35 - 1.45 g/mL
Refractive Index (n20/D)	1.470 - 1.480

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.