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2,3,4-trichlorothiophene

Also known as: 2,3,4-Trichlor-thiophen, 2,3,4-Trichlorothiophen, 2,3,4-trichloro-thiophene, thiophene, 2,3,4-trichloro-

2,3,4-trichlorothiophene (CAS 17249-78-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4HCl3S and a molecular weight of 187.47500 g/mol. Key properties include a boiling point of 212ºC at 760mmHg, a density of 1.633g/cm3 and a flash point of 105.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
17249-78-4
Jingsj CID
J-1083077-0
Molecular Formula
C4HCl3S
Molecular Weight
187.47500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point212ºC at 760mmHg
Density1.633g/cm3
Flash Point105.6ºC
Exact Mass185.88600
PSA28.24000
LogP3.70830
Vapor Pressure0.257mmHg at 25°C
Refractive Index1.601

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2,3,4-trichlorothiophene?

The CAS number of 2,3,4-trichlorothiophene is 17249-78-4.

What are the molecular formula and molecular weight of 2,3,4-trichlorothiophene?

2,3,4-trichlorothiophene has molecular formula C4HCl3S and molecular weight 187.47500 g/mol.

What are the upstream and downstream products of 2,3,4-trichlorothiophene?

For 2,3,4-trichlorothiophene, Upstream Products: Tetrachlorothiophene, 3,4,5-Trichlorothiophene-2-carboxylic acid; Downstream Products: Tetrachlorothiophene, 3,4,5-Trichlorothiophene-2-carboxylic acid, 3,4-Dichlorothiophene.

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

Last updated:

How to cite: Jingsj. "2,3,4-trichlorothiophene (CAS 17249-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1083077-0 (accessed 2026-11-09).

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