2,5-Dichlorothiophene
Also known as: 2,5-dichloro-thiophen, 2,5-dichloro-thiophene, 5-chloro-2-thienyl chloride, Dichlorothiophene, thiophene,2,5-dichloro-
2,5-Dichlorothiophene (CAS 3172-52-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H2Cl2S and a molecular weight of 153.030 g/mol. Key properties include a melting point of -41--40°C, a boiling point of 158.9±20.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 59.4±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3172-52-9
- Jingsj CID
- J-1990829-3
- Molecular Formula
- C4H2Cl2S
- Molecular Weight
- 153.030 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -41--40°C |
|---|---|
| Boiling Point | 158.9±20.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 59.4±0.0 °C |
| Exact Mass | 151.925430 |
| PSA | 28.24000 |
| LogP | 3.20 |
| Vapor Pressure | 3.3±0.3 mmHg at 25°C |
| Refractive Index | 1.584 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. 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 2,5-Dichlorothiophene?
The CAS number of 2,5-Dichlorothiophene is 3172-52-9.
What are the molecular formula and molecular weight of 2,5-Dichlorothiophene?
2,5-Dichlorothiophene has molecular formula C4H2Cl2S and molecular weight 153.030 g/mol.
Is 2,5-Dichlorothiophene hazardous?
2,5-Dichlorothiophene has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
What are the upstream and downstream products of 2,5-Dichlorothiophene?
For 2,5-Dichlorothiophene, Upstream Products: 2-Chlorothiophene, 2,5-Dichlorothiophene-3-carboxylic acid, 2-Thiophenecarboxylic acid; Downstream Products: 3-Acetyl-2,5-dichlorothiophene, 2,5-Dichlorothiophene-3-carboxylic acid, Tetrachlorothiophene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,5-Dichlorothiophene (CAS 3172-52-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990829-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.