Description

cis-2-Butene is a highly reactive, gaseous hydrocarbon belonging to the alkene family, specifically the cis-isomer of 2-butene. This compound is a crucial intermediate in the petrochemical and polymer industries, valued for its role in alkylation, polymerization, and organic synthesis. It serves as a fundamental building block for the production of high-octane gasoline components, synthetic rubbers, and various specialty chemicals. Industries including petrochemical refining, polymer manufacturing, and fine chemical synthesis rely on a consistent and high-purity supply of this key olefin.

Application

• Petrochemical Feedstock: A key intermediate in the production of high-octane alkylates for gasoline blending via alkylation with isobutane.
• Polymer & Elastomer Production: Used as a co-monomer in the synthesis of polyethylene and synthetic rubbers like polybutene.
• Organic Synthesis: Serves as a versatile reagent in fine chemical manufacturing for hydrogenation, oxidation, and addition reactions.
• Chemical Intermediate: Employed in the production of butadiene, methyl ethyl ketone (MEK), and other C4 derivatives.
• Fuel & Fuel Additives: Contributes to the octane rating and combustion characteristics of refined fuels.
• Calibration & Research: Used as a standard or reference material in analytical chemistry and catalysis research.

Basic Information

Product Name	cis-2-Butene
CAS No.	590-18-1
Molecular Formula	C4H8
Molecular Weight	56.11 g/mol
Synonyms	(Z)-2-Butene; cis-But-2-ene; β-cis-Butylene; (Z)-But-2-ene; 2-cis-Butene; (2Z)-2-Butene; High Purity cis-2-Butene; cis-Dimethylethylene
EINECS	209-673-7

Quality Control

Our cis-2-Butene is produced and handled under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as purity, isomer content, and impurity profiles. Our quality commitment aligns with industrial and specialty chemical standards, ensuring reliability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile and gaseous nature, this product must be stored in approved, properly rated pressurized gas cylinders or containers in a cool, well-ventilated area away from heat, sparks, and open flames. Storage areas should be free of oxidizing agents and ignition sources. Cylinders should be secured upright to prevent damage.

Specification

Item	Specification
Appearance	Colorless Gas
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
cis-2-Butene Content	≥ 98.5%
trans-2-Butene	≤ 0.5%
1-Butene	≤ 0.3%
Isobutene	≤ 0.2%
Butane	≤ 0.1%
Water Content	≤ 10 ppm
Total Impurities	≤ 1.0%

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