Description

Isobutene is a highly reactive, low molecular weight alkene that serves as a fundamental building block in modern petrochemical and polymer synthesis. Its value lies in its versatile reactivity, enabling the production of a wide range of high-performance materials and fuel additives. This gaseous monomer is essential for manufacturers in the polymer, specialty chemical, and fuel industries seeking to produce products like butyl rubber, polyisobutylene, and methyl tert-butyl ether (MTBE).

Application

• Butyl Rubber Production: Primary monomer for manufacturing butyl and halobutyl rubber, used in tire inner liners, pharmaceutical stoppers, and sealants.
• Polyisobutylene (PIB) Synthesis: Feedstock for producing various grades of PIB, from low molecular weight lubricant additives to high molecular weight sealants and adhesives.
• Fuel Additives: Key raw material for producing methyl tert-butyl ether (MTBE) and isooctane, which enhance octane ratings and improve gasoline combustion.
• Chemical Intermediates: Used in the synthesis of antioxidants (e.g., BHT), alkylphenols, methacrylic acid, and other specialty organic compounds.
• Plastics and Resins: Co-monomer in the production of certain polyolefins and resins to modify properties like flexibility and impact resistance.
• Refrigerants and Propellants: Component in blends for specific refrigeration applications and as a propellant in aerosol products.

Basic Information

Product Name	Isobutene
CAS No.	115-11-7
Molecular Formula	C4H8
Molecular Weight	56.11 g/mol
Synonyms	Isobutylene; 2-Methylpropene; 2-Methylprop-1-ene; γ-Butylene; 1,1-Dimethylethylene; Liquefied Petroleum Gas; LPG; Methylpropene; UN 1055
EINECS	204-066-3

Quality Control

Our Isobutene is produced under stringent process controls to ensure consistent purity and performance. Quality is verified through comprehensive analytical testing, including gas chromatography (GC), to meet exacting customer and industry specifications. Certificates of Analysis (COA) documenting key parameters such as purity and impurity profiles are provided with each shipment and are available upon request.

Storage

Store in a cool, well-ventilated area away from direct sunlight, heat sources, and ignition points. Containers must be tightly sealed and grounded to prevent static discharge. Due to its highly volatile and gaseous nature under ambient conditions, it is typically stored as a liquefied gas under pressure in appropriate DOT/ISO-approved cylinders or bulk tanks. Keep separated from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless gas
Assay (GC)	≥ 99.0%
n-Butenes	≤ 0.5%
1,3-Butadiene	≤ 50 ppm
Water Content	≤ 50 ppm
Total Sulfur	≤ 5 ppm
Acidity (as acetic acid)	≤ 10 ppm

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