2,5-Dibromothiophene
Also known as: Thiophene, 2,5-dibromo-, alpha,alpha-Dibromothiophene, 2,5-Dibromothiophen, NSC 4488, EINECS 221-547-3, MFCD00005420
2,5-Dibromothiophene (CAS 3141-27-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H2Br2S and a molecular weight of 241.932 g/mol. Key properties include a melting point of -6 °C, a boiling point of 209.5±20.0 °C at 760 mmHg, a density of 2.2±0.1 g/cm3 and a flash point of 99.4±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3141-27-3
- Jingsj CID
- J-32017-2
- Molecular Formula
- C4H2Br2S
- Molecular Weight
- 241.932 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -6 °C |
|---|---|
| Boiling Point | 209.5±20.0 °C at 760 mmHg |
| Density | 2.2±0.1 g/cm3 |
| Flash Point | 99.4±0.0 °C |
| Exact Mass | 239.824387 |
| PSA | 28.24000 |
| LogP | 3.55 |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.638 |
| Additional Property | practically insoluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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-Dibromothiophene?
The CAS number of 2,5-Dibromothiophene is 3141-27-3.
What are the molecular formula and molecular weight of 2,5-Dibromothiophene?
2,5-Dibromothiophene has molecular formula C4H2Br2S and molecular weight 241.932 g/mol.
Is 2,5-Dibromothiophene hazardous?
2,5-Dibromothiophene has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2,5-Dibromothiophene?
For 2,5-Dibromothiophene, Upstream Products: 2-Bromothiophene, 2,5-BIS(TRIMETHYLSILYL)THIOPHENE, 2-Iodothiophene; Downstream Products: 5,5'-Dibromo-2,2'-bithiophene, thiophene-2,5-dicarboxylic acid, 2,5-Thiophenedicarboxylic acid dimethyl ester.
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-Dibromothiophene (CAS 3141-27-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32017-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.