ChemicalBook > CAS DataBase List > 2-BUTENE

2-BUTENE

Product Name: 2-BUTENE
CAS No.: 624-64-6
Chemical Name: 2-BUTENE
Synonyms: (E)-2-C4H8;t-butene-2;2-BUTYLENE;TR-2-BUTENE;(E)-2-Butene;trans-Butene;2-Butene,(E)-;(E)-But-2-ene;2-trans-Butene;(2E)-But-2-ene
CBNumber: CB6449452
Molecular Formula: C4H8
Formula Weight: 56.11
MOL File: 624-64-6.mol

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2-BUTENE Property

Melting point:: −140 °C(lit.)
Boiling point:: 1 °C(lit.)
Density: 0.5990
vapor density: 2 (vs air)
vapor pressure: 2575 mm Hg ( 37.7 °C)
refractive index: 1.3932
Flash point:: <−30 °F
explosive limit: 9.7%
Merck: 1520
BRN: 1718756
Stability:: Stable. Incompatible with strong oxidizing agents, peroxides, peroxyacids, aluminium tetrahydroborate. Extremely flammable.
InChI: InChI=1S/C4H8/c1-3-4-2/h3-4H,1-2H3/b4-3+
InChIKey: IAQRGUVFOMOMEM-ONEGZZNKSA-N
SMILES: C/C=C/C
CAS DataBase Reference: 624-64-6(CAS DataBase Reference)
EPA Substance Registry System: trans-2-Butene (624-64-6)

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Safety

Hazard Codes: F,F+
Risk Statements: 12-11
Safety Statements: 9-16-33-38
RIDADR: UN 1012 2.1
WGK Germany: 3
RTECS: EM2932000
Autoignition Temperature: 615 °F
DOT Classification: 2.1 (Flammable gas)
HazardClass: 2.1
HS Code: 2901230000
Hazardous Substances Data: 624-64-6(Hazardous Substances Data)

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H220Extremely flammable gas

H280Contains gas under pressure; may explode if heated

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P410+P403Protect from sunlight. Store in a well-ventilated place.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 295086
Product name: trans-2-Butene
Purity: ≥99%
Packaging: 50g
Price: $417
Updated: 2025/07/31

Sigma-Aldrich

Product number: 295086
Product name: trans-2-Butene
Purity: ≥99%
Packaging: 200g
Price: $1580
Updated: 2025/07/31

Apolloscientific

Product number: OR4472
Product name: (2E)-But-2-ene
Packaging: 200g
Price: $798
Updated: 2021/12/16

SynQuest Laboratories

Product number: 1300-1-E4
Product name: trans-2-Butene
Purity: 95%
Packaging: 50g
Price: $195
Updated: 2021/12/16

Apolloscientific

Product number: OR4472
Product name: (2E)-But-2-ene
Packaging: 50g
Price: $285
Updated: 2021/12/16

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2-BUTENE Chemical Properties,Usage,Production

Chemical Properties

colourless gas

Chemical Properties

2-Butene, C4H8, can occur in trans or cis conformation; the former is the more stable form. It is a colorless, extremely flammable gas. 2-Butene occurs in coal gas and has been detected in diesel exhaust. The more highly reactive trans-2-butene occurs at much lower concentrations in the atmosphere than other comparable hydrocarbons.

Uses

trans-2-Butene can be used as a monomer unit to produce high molecular weight polyolefins with well-defined microstructures by nickle-catalyzed polymerization reaction. It is also used as a reactant in the isomerization reaction to produce the corresponding isomer using acid-activated catalysts.

Definition

ChEBI: But-2-ene is a butene.

Production Methods

2-Butene has been recovered from refining gases or produced by petroleum cracking. It is a component in the production of gasolines, butadiene, and a variety of other chemicals.

General Description

A colorless liquefied petroleum gas. An asphyxiant. Flammability limits of 1.8-9% by volume.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

The unsaturated aliphatic hydrocarbons, such as 2-BUTENE, are generally much more reactive than the alkanes. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, compounds in this class can undergo very exothermic addition polymerization reactions. Aluminum borohydride reacts with alkenes and in the presence of oxygen, combustion is initiated even in the absence of moisture.

Purification Methods

The gas is dried with CaH2 and purified by gas chromatography. [Beilstein 1 H 205, 1 II 176, 1 III 730, 1 IV 781.] HIGHLY FLAMMABLE.

2-BUTENE Preparation Products And Raw materials

Raw materials

Preparation Products

2-BUTANOL

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View Lastest Price from 2-BUTENE manufacturers

Career Henan Chemical Co

Product: 2-BUTENE 624-64-6
Price: US $7.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 100kg
Release date: 2020-02-18

624-64-6, 2-BUTENERelated Search:

2-BROMO-TRANS-2-BUTENE Mesaconic acid 2-CHLORO-2-BUTENE,2-CHLORO-2-BUTENE(CIS-TRANS) TRANS-2-BUTENE-1,4-BIS(TRIPHENYLPHOSPHONIUM CHLORIDE) 2-Methyl-1-butene-3-one 2-METHYL-2-BUTENE 2-BUTENE OXIDE Ethyl crotonate 2-BUTENE-1-OL 2-Butene 1,4-Dibromo-trans-2-butene,4-dibromo- trans-2-butene 2-ETHYL-1-BUTENE 2-BROMO-TRANS-2-BUTENE 1,4-Dichloro-trans-2-butene 2-HYDROXY-2-METHYL-3-BUTENE,2-METHYL-3-BUTENE-2-OL TRANS-2-BUTENYL ACETATE Crotonic acid 2-CHLORO-4-(3-METHOXYPHENYL)-1-BUTENE

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low-boilingbutene-2

t-butene-2

trans-1,2-Dimethylethylene

trans-but-2-ene

trans-Butene

trans-Butylene

2-BUTYLENE

2-BUTENE (TRANS)

TRANS-2-BUTENE

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TRANS-SYM-DIMETHYLETHYLENE

TRANS-B-BUTYLENE

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trans-2-BUTENE, 99%trans-2-BUTENE, 99%trans-2-BUTENE, 99%trans-2-BUTENE, 99%

rans-but-2-ene

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<i>trans</i>-2-Butene

624-64-6

624646

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