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3-chloro-2-(chloromethyl)prop-1-ene

Also known as: 3-chloro-2-(chloromethyl)propene, 1,1-bis(chloromethyl)ethylene, 1,3-dichloro-2-methylenepropane, 2-(chloromethyl)-3-chloro-1-propene, 2-methylene-1,3-dichloropropane, 2-methylenepropane-1,3-dichloride, methallyl dichloride, 3-chloro-2-chloromethyl-1-propene

3-chloro-2-(chloromethyl)prop-1-ene (CAS 1871-57-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H6Cl2 and a molecular weight of 124.996 g/mol. Key properties include a melting point of 14 °C, a boiling point of 138.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 36.7±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H301 — Toxic if swallowed and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1871-57-4
Jingsj CID
J-1015234-8
Molecular Formula
C4H6Cl2
Molecular Weight
124.996 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point14 °C
Boiling Point138.0±0.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point36.7±0.0 °C
Exact Mass123.984657
LogP2.29
Additional Property3.12 (vs air)
Vapor Pressure8.5±0.2 mmHg at 25°C
Refractive Index1.445

GHS Safety & Compliance

Flammable / Acute Toxicity / Environmental HazardSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H301 — Toxic if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation
  • H400 — Very toxic to aquatic life

Customs & Trade Information

HS Code2903299090
Summary2903299090 other unsaturated chlorinated derivatives of acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-chloro-2-(chloromethyl)prop-1-ene?

The CAS number of 3-chloro-2-(chloromethyl)prop-1-ene is 1871-57-4.

What are the molecular formula and molecular weight of 3-chloro-2-(chloromethyl)prop-1-ene?

3-chloro-2-(chloromethyl)prop-1-ene has molecular formula C4H6Cl2 and molecular weight 124.996 g/mol.

Is 3-chloro-2-(chloromethyl)prop-1-ene hazardous?

3-chloro-2-(chloromethyl)prop-1-ene has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H301 — Toxic if swallowed; H315 — Causes skin irritation.

What are the upstream and downstream products of 3-chloro-2-(chloromethyl)prop-1-ene?

For 3-chloro-2-(chloromethyl)prop-1-ene, Upstream Products: 2-Methylene-1,3-propanediol, 3-Chloro-2-methyl-1-propene, 3-Chloro-2,2-bis(chloromethyl)propanoic acid; Downstream Products: 2-Methylene-1,3-propanediol, Trichloro[2-(chloromethyl)-2-propen-1-yl]silane.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-chloro-2-(chloromethyl)prop-1-ene (CAS 1871-57-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1015234-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.