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1-Buten-3-yne

1-Buten-3-yne Structure
1-Buten-3-yne structure
CAS No.
689-97-4
Chemical Name:
1-Buten-3-yne
Synonyms
VINYLACETYLENE;But-1-en-3-yne;1-Butene-3-yne;Butenyne;1-Butenyne;Buten-3-yne;1-Butyn-3-ene;ethynyl-ethen;Ethynylethene;3-BUTEN-1-YNE
CBNumber:
CB2454902
Molecular Formula:
C4H4
Molecular Weight:
52.07
MDL Number:
MFCD00053683
MOL File:
689-97-4.mol
MSDS File:
SDS
Last updated:2026-09-12 18:51:18
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1-Buten-3-yne Properties

Melting point 203 °C(Solv: water (7732-18-5))
Boiling point 3°C
Density 0.6800
refractive index 1.4161
Henry's Law Constant 4.1×10-4 mol/(m3Pa) at 25℃, Plyasunov and Shock (2000)
InChI InChI=1S/C4H4/c1-3-4-2/h1,4H,2H2
InChIKey WFYPICNXBKQZGB-UHFFFAOYSA-N
SMILES C=CC#C
EWG's Food Scores 1
FDA UNII VW72FM10OQ
EPA Substance Registry System Vinyl acetylene (689-97-4)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Gas Cylinder (GHS04)
GHS02,GHS04
Signal word  Danger
Hazard statements  H220-H280
Precautionary statements  P410+P403-P210-P377-P381-P403
RIDADR  1954
TSCA  TSCA listed
HazardClass  2.1
Hazardous Substances Data 689-97-4(Hazardous Substances Data)
NFPA 704
4
2 3

1-Buten-3-yne price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
American Custom Chemicals Corporation CHM0006603 1-BUTEN-3-YNE 95.00% 689-97-4 100G $3031.88 2021-12-16 Buy
Product number Packaging Price Buy
CHM0006603 100G $3031.88 Buy

1-Buten-3-yne Chemical Properties,Uses,Production

Description

Vinylacetylene, also known as butenyne, monovinylacetylene, 1-butene-3-yne, 1-butyn- 3-ene, 3-buten-1-yne, buten-3-yne, ethynylethene, 1-butenyne and vinylethyne, is a derivative of acetylene.

Chemical Properties

Vinylacetylene is a gas with a smell similar to acetylene. The melting point is –118 to –120°C, the boiling point is 5.5 °C under atmospheric pressure, and the boiling point of vinylacetylene under different pressures is shown in Table 7.1.
The boiling point of vinylacetylene under different pressures

Uses

Vinylacetylene is mainly used for the production of chloroprene, leaf alcohol and methanol adhesives. It is also used for the production of divinyl ether and methyl vinyl (methyl) ketone-based polymer.

Definition

ChEBI: Butenyne is an acyclic acetylene, an acyclic olefin, an enyne and a terminal acetylenic compound.

General Description

A colorless gas or liquid. Derived by the dimerization of acetylene. Used in the synthesis of neoprene and for other organic syntheses.

Air & Water Reactions

Highly flammable. Oxidizes in air to form unstable peroxides that may explode spontaneously.

Reactivity Profile

1-BUTEN-3-YNE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. Forms an explosive salt with silver nitrate. Thermally unstable, under pressure, in combination with 1,3-butadiene [Loss Prev., 1971, 5, 67].

Synthesis

Acetylene is dimerized in the presence of hydrochloric acid solution of cuprous chloride and ammonium chloride to obtain vinylacetylene.

1-Buten-3-yne synthesis

110-57-6
689-97-4
Synthesis of 1-Buten-3-yne from trans-1,4-Dichloro-2-butene

1-Buten-3-yne Preparation Products And Raw materials

Raw materials

Diacetylene Cyanoacetylene Acetylene Benzene

Preparation Products

polyphenylacetylene 2,3-Butanedione 2-chloro-1,3-butadiene 3-Methyl-2-penten-4-yn-1-ol Methyl vinyl ketone
1,2-Butadiene 4-Ethoxy-2-butanone Selenophene 4-chloro-1-buten-3-yne

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1-Buten-3-yne Suppliers

Global( 34)Suppliers
Supplier Tel Email Country ProdList Advantage
Wuhan eastop Technology Co., ltd.6 18086015167 17702779303 service@isotopechina.com China 234 58
Central China Special Gas (CCSG) Co., Ltd 0734-8755555 15674722888 lyq@ccsg.cn China 405 58
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
ShangHai Biochempartner Co.,Ltd 177-54423994 17754423994 2853530910@QQ.com China 8000 62
Shanghai wechem chemical co., ltd 18824865657 2684615189@qq.com China 428 58
Shaanxi Dideu Medichem Co. Ltd +86-29-81139210 +86-17392587031 1059@dideu.com China 9983 58
Antai Fine Chemical Technology Co.,Limited 18503026267 info@antaichem.com CHINA 9631 58
DWS Specialty Gas Co., Ltd 15906197626 yanning@abamtc.com China 447 58
Foshan Zhicheng Gas Co., Ltd., 18098161577 ZC_GAS@163.COM China 168 58
Maotu Gas Equipment (Shanghai) Co. LTD 17301833415 nilong@maotoogas.com China 271 58
Supplier Advantage
Wuhan eastop Technology Co., ltd.6 58
Central China Special Gas (CCSG) Co., Ltd 58
Shanghai Hanhong Scientific Co.,Ltd. 64
ShangHai Biochempartner Co.,Ltd 62
Shanghai wechem chemical co., ltd 58
Shaanxi Dideu Medichem Co. Ltd 58
Antai Fine Chemical Technology Co.,Limited 58
DWS Specialty Gas Co., Ltd 58
Foshan Zhicheng Gas Co., Ltd., 58
Maotu Gas Equipment (Shanghai) Co. LTD 58

Related articles

View Lastest Price from 1-Buten-3-yne manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1-BUTEN-3-YNE pictures 2026-06-30 1-BUTEN-3-YNE
689-97-4
 1kg 98% 1000kg Shaanxi Dideu New Materials Co. Ltd
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  • 1-BUTEN-3-YNE
    689-97-4
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1-Buten-3-yne (8CI, 9CI) 1-BUTEN-3-YNE, 50% in XYLENE 3-BUTEN-1-YNE 50% IN XYLENE Buten-3-yne, 1- Buten-3-yne 1-buten-3-yne,vinylacetylene 1-Butenyne 1-Butyn-3-ene Butenyne CH2=CHCequivCH Ethene, ethynyl- ethynyl-ethen Ethynylethene Monovinylacetylene 3-BUTEN-1-YNE 1-BUTEN-3-YNE ISO 9001：2015 REACH 1-Butene-3-yne But-1-en-3-yne VINYLACETYLENE 1-Buten-3-yne 689-97-4 HCCCHCH2 CH2CHCCH 689974