1,4-Dichloro-2-butyne

Product Name: 1,4-Dichloro-2-butyne
CAS No.: 821-10-3
Chemical Name: 1,4-Dichloro-2-butyne
Synonyms: 1,4-Dichlorobutyne;DK925;DKSI002;DKFELEX0248;Dichlorobutyne;1,4-Dichlorbut-2-in;1,4-dichloro-2-butyn;1,4-dichloro-1-butyne;1,4-DICHLORO-2-BUTYNE;1,4-dichlorobut-1-yne
CBNumber: CB0276041
Molecular Formula: C4H4Cl2
Formula Weight: 122.98
MOL File: 821-10-3.mol

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1,4-Dichloro-2-butyne Property

Melting point:: 162-165 °C
Boiling point:: 165-168 °C (lit.)
Density: 1.258 g/mL at 25 °C (lit.)
refractive index: n20/D 1.505(lit.)
Flash point:: 320 °F
storage temp.: Keep in dark place,Sealed in dry,Room Temperature
solubility: Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form: Oil
color: Clear Colourless
Sensitive: Light Sensitive
BRN: 635740
InChIKey: RCHDLEVSZBOHOS-UHFFFAOYSA-N
CAS DataBase Reference: 821-10-3(CAS DataBase Reference)
NIST Chemistry Reference: 2-Butyne, 1,4-dichloro-(821-10-3)
EPA Substance Registry System: 1,4-Dichloro-2-butyne (821-10-3)

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Safety

Hazard Codes: Xi,T
Risk Statements: 36/37/38-40-23/24/25
Safety Statements: 26-36-45-38-36/37/39-28A
RIDADR: UN 2810
WGK Germany: 3
RTECS: ER9600000
F: 8-10
HazardClass: 6.1
PackingGroup: II
HS Code: 29032900

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H301Toxic if swalloed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: D59607
Product name: 1,4-Dichloro-2-butyne
Purity: 99%
Packaging: 5g
Price: $92.8
Updated: 2025/07/31

Sigma-Aldrich

Product number: D59607
Product name: 1,4-Dichloro-2-butyne
Purity: 99%
Packaging: 25g
Price: $255
Updated: 2025/07/31

TCI Chemical

Product number: D1528
Product name: 1,4-Dichloro-2-butyne
Purity: >97.0%(GC)
Packaging: 5g
Price: $50
Updated: 2025/07/31

TCI Chemical

Product number: D1528
Product name: 1,4-Dichloro-2-butyne
Purity: >97.0%(GC)
Packaging: 25g
Price: $155
Updated: 2025/07/31

Sigma-Aldrich

Product number: D59607
Product name: 1,4-Dichloro-2-butyne
Purity: 99%
Packaging: 100g
Price: $934
Updated: 2025/07/31

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1,4-Dichloro-2-butyne Chemical Properties,Usage,Production

Chemical Properties

CLEAR COLORLESS TO YELLOWISH LIQUID

Uses

1,4-Dichloro-2-butyne used in the synthesis of 1,4-disubstituted 1,2,3-triazoles. Also, it is used in the approach of the 20S-camptothecin family of antitumor agents.

Preparation

1,4-Dichloro-2-butyne could be conveniently prepared by treating 1,4-butynediol with Thionyl Chloride. However, as a precautionary measure, the medium is diluted with CH2Cl2 and cooled to ?30?°C before adding thionyl chloride to avoid hazards associated with the exothermicity of the reaction.

Reactions

1,4-Dichloro-2-butyne can be converted into other compounds such as amides, ethers, and esters using ethyl diazoacetate.

Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of Cl-. Probably a dangerous fKe and explosion hazard. See also ACETYLENE COMPOUNDS and CHLORINATED HYDROCARBONS, ALIPHATIC

1,4-Dichloro-2-butyne Preparation Products And Raw materials

Raw materials

Preparation Products

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1,4-Dichloro-2-butyne Suppliers

Americas 1 Belgium 1 Canada 3 China 173 Europe 1 France 1 Germany 3 India 8 Japan 3 Switzerland 2 The Netherlands 1 Ukraine 1 United Kingdom 12 United States 31 Global 241

J & K SCIENTIFIC LTD.

Tel: 18210857532; 18210857532
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Meryer (Shanghai) Chemical Technology Co., Ltd.

Tel: 4006356688 18621169109
Fax: 86-21-61259102
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TCI (Shanghai) Development Co., Ltd.

Tel: 021-67121386
Fax: 021-67121385
Email: Sales-CN@TCIchemicals.com
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Beijing HwrkChemical Technology Co., Ltd

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Energy Chemical

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Shanghai Hanhong Scientific Co.,Ltd.

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Chemsky（shanghai）International Co.,Ltd.

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Sichuan Kulinan Technology Co., Ltd

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View Lastest Price from 1,4-Dichloro-2-butyne manufacturers

Shaanxi Dideu New Materials Co. Ltd

Product: 1,4-Dichloro-2-butyne 821-10-3
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98.0%
Supply Ability: 10000KGS
Release date: 2025-07-07

Hebei Chuanghai Biotechnology Co., Ltd

Product: 1,4-Dichloro-2-butyne 821-10-3
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 20 mt
Release date: 2025-03-14

Henan Fengda Chemical Co., Ltd

Product: 1,4-Dichloro-2-butyne 821-10-3
Price: US $100.00-1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: g-kg-tons, free sample is available
Release date: 2023-12-26

821-10-3, 1,4-Dichloro-2-butyneRelated Search:

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1,4-DICHLORO-2-BUTYNE

1,4-dichloro-2-butyn

1,4-dichloro-but-2-yne

1,4-Dichlorobutyne

Dichlorobutyne

2-Butyne, 1,4-dichloro-

bis(chloromethyl)acetylene

1,4-Dichloro-2-butyne, 99% 25ML

1,4-Dichloro-2-butyne,99%

1,4-Dichlorobut-2-yne 98+%

1,4-dichloro-1-butyne

1,4-dichlorobut-1-yne

1,4-Dichloro-2-butyne&gt

1,4-Dichloro-2-butyne ISO 9001：2015 REACH

DK925

1,4-Dichlorbut-2-in

DKFELEX0248

DKSI002

821-10-3

820-10-3

ClCH2C8801CCH2Cl

C4H4Cl2

ClCH2CCCH2Cl

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