Hot Products

Basic Information

Post buying leads

Suppliers

Cas Database

Name	2-Chloro-1,3-butadiene	EINECS	204-818-0
CAS No.	126-99-8	Density	0.923 g/cm³
PSA	0.00000	LogP	1.92490
Solubility	N/A	Melting Point	-130 °C
Formula	C₄H₅Cl	Boiling Point	59.399 °C at 760 mmHg
Molecular Weight	88.5367	Flash Point	-8.827 °C
Transport Information	UN 1993	Appearance	clear colorless liquid
Safety	16-45-53-36/37-7	Risk Codes	10-20/22-36-48/20-36/37/38-11-45-39/23/24/25-23/24/25
Molecular Structure		Hazard Symbols	F, T
Synonyms	2-Chlorobutadiene;Chloroprene;NSC 18589;b-Chloroprene;	Article Data	78

2-Chloro-1,3-butadiene Synthetic route

: 689-97-4
3-buten-1-yne

A: 25790-55-0
4-chloro-1,2-butadiene

B: 126-99-8
chloroprene

Conditions

Conditions	Yield
With hydrogenchloride; calcium chloride
With hydrogenchloride; calcium chloride

: 689-97-4
3-buten-1-yne

: 126-99-8
chloroprene

Conditions

Conditions	Yield
With hydrogenchloride
With hydrogenchloride; pyrographite; mercury at 90℃;

: 689-97-4
3-buten-1-yne

A: 126-99-8
chloroprene

B: 926-57-8
1,3-dichloro-2-butene

Conditions

Conditions	Yield
With hydrogenchloride; ammonium chloride; copper(l) chloride at 30℃;
With hydrogenchloride; ammonium chloride; copper(l) chloride at 30℃;
With hydrogenchloride; ammonium chloride; copper(l) chloride at 30℃;

: 4461-41-0
2-chloro-but-2-ene

: 126-99-8
chloroprene

Conditions

Conditions	Yield
With chlorine at 500 - 515℃; Leiten durch ein Kohlerohr;

: 75-01-4
chloroethylene

: 126-99-8
chloroprene

Conditions

Conditions	Yield
at 500℃;
at 500℃; Pyrolysis;

: 1790-22-3
1,2,4-trichlorobutane

A: 310447-99-5, 310448-01-2
3,4-dichlorobut-1-ene

B: 126-99-8
chloroprene

Conditions

Conditions	Yield
With sodium hydroxide at 190℃;

: 10403-60-8
2,2,3-trichloro-butane

: 126-99-8
chloroprene

Conditions

Conditions	Yield
at 400 - 510℃; beim Leiten durch Roehren aus Pyrexglas, Quarz, nichtrostendem Stahl oder Kupfer;
With pyrographite; barium(II) chloride at 300℃;
With water; silica gel; magnesium sulfate; magnesium chloride at 280 - 300℃;
With pyrographite; barium(II) chloride at 300℃;
at 400 - 510℃; beim Leiten durch Roehren aus Pyrexglas, Quarz, nichtrostendem Stahl oder Kupfer;

: 10403-60-8
2,2,3-trichloro-butane

A: 51157-81-4
1,1-dichloro-but-2-ene

B: 126-99-8
chloroprene

Conditions

Conditions	Yield
at 400 - 510℃;
at 400 - 510℃;

: 7013-11-8
2,3-dichlorobut-1-ene

: 126-99-8
chloroprene

Conditions

Conditions	Yield
at 530℃; Leiten durch ein Quarzrohr;

: 7013-11-8
2,3-dichlorobut-1-ene

A: 689-97-4
3-buten-1-yne

B: 126-99-8
chloroprene

Conditions

Conditions	Yield
at 530℃; im Quarzrohr;

2-Chloro-1,3-butadiene Chemical Properties

The Molecular formula of Chloroprene(126-99-8): C₄H₅Cl
The Molar mass of Chloroprene(126-99-8): 88.5365 g/mol
The Structure:

Appearance: Colorless liquid.
Density: 0.9598 g/cm³, liquid.
Melting point: -130 °C, 143 K, -202 °F
Boiling point: 59.4 °C, 333 K, 139 °F
Flash point: -15.6°C
Solubility in water: 0.026 g/100 mL, liquid.
Other names: Chloroprene; 2-Chloro-1,3-butadiene
Chloroprene(126-99-8) has the formula CH₂=CCl-CH=CH₂, which is colorless liquid. It is the common name for the organic compound 2-chloro-1,3-butadiene.

2-Chloro-1,3-butadiene Uses

Chloroprene(126-99-8) is the monomer for the production of the polymer polychloroprene, a type of synthetic rubber.

2-Chloro-1,3-butadiene Production

Chloroprene(126-99-8) is, chemically, a chlorovinyl ester of hydrochloric acid and can be manufactured by polymerizing acetylene to vinyl acetylene using a weak solution containing ammonium chloride (NH₄Cl), cuprous chloride (Cu₂Cl₂), and potassium chloride (KCl) as catalyst. The off-gas from the reactor has its water condensed out and is then fractionated. Aqueous hydrochloric acid at 35 to 45℃ is then reacted with the vinyl acetylene in the presence of cupric chloride to give chloroprene (2-chloro-1,3-butadiene).
            2HC≡CH → CH₂=CHC≡CH
       CH₂=CHC≡CH + HCl → CH₂=CHClC=CH₂The contact time is about 15 seconds with a 20 percent conversion per pass. An overall yield of approximately 65 percent can be achieved.
Chloroprene(126-99-8) is also made by chlorination of butadiene at 300℃ followed by dehydrochlorination, using sodium hydroxide at 100℃. Addition of the chlorine to the butadiene occurs at either 1,2 or 1,4 because the intermediate allyl carbocation is delocalized.
      CH₂=CHCH=CH₂ + Cl₂ → CH₂ClCH=CHCH₂Cl
     CH₂ClCH=CHCH₂Cl + Cl₂ → CH₂=CHC(Cl)=CH₂

2-Chloro-1,3-butadiene Toxicity Data With Reference

RTECS number: EL9625000

2-Chloro-1,3-butadiene Safety Profile

Hazard Codes:

T
Risk Statements: 10-20/22-36-48/20-36/37/38-11-45-39/23/24/25-23/24/25
10: Flammable
20/22: Harmful by inhalation and if swallowed
36: Irritating to the eyes
48/20: Harmful: danger of serious damage to health by prolonged exposure through inhalation
36/37/38: Irritating to eyes, respiratory system and skin
11: Highly Flammable
45: May cause cancer
39/23/24/25: Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed
23/24/25: Toxic by inhalation, in contact with skin and if swallowed
Safety Statements: 16-45-53-36/37-7
16: Keep away from sources of ignition - No smoking
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
53: Avoid exposure - obtain special instruction before use
36/37: Wear suitable protective clothing and gloves
7: Keep container tightly closed
HazardClass: 3.1
PackingGroup: I

2-Chloro-1,3-butadiene Specification

The 1,4-dichloro isomer can be isomerized to the 1,2-dichloro isomer by heating with cuprous chloride.
CH₂ClCH=CHCH₂Cl → CH₃CH₂CCl=CHCl

Post a RFQ

Cas No.:

Product Name:

Quantity:

Email:

Company name:

Valid Period:

Detailed Requirements:

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

What can I do for you?
Get Best Price

Get Best Price for 126-99-8