2,5-Dibromo-3,4-ethylenedioxythiophene
Also known as: 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine, 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxin, 5,7-Dibromo-2,3-dihydrothieno[3,4-b]-1,4-dioxine, Thieno[3,4-b]-1,4-dioxin, 5,7-dibromo-2,3-dihydro-
2,5-Dibromo-3,4-ethylenedioxythiophene (CAS 174508-31-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4Br2O2S and a molecular weight of 299.968 g/mol. Key properties include a melting point of 98ºC, a boiling point of 306.5±42.0 °C at 760 mmHg, a density of 2.1±0.1 g/cm3 and a flash point of 139.2±27.9 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 174508-31-7
- Jingsj CID
- J-1321432-9
- Molecular Formula
- C6H4Br2O2S
- Molecular Weight
- 299.968 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 98ºC |
|---|---|
| Boiling Point | 306.5±42.0 °C at 760 mmHg |
| Density | 2.1±0.1 g/cm3 |
| Flash Point | 139.2±27.9 °C |
| Exact Mass | 297.829865 |
| PSA | 46.70000 |
| LogP | 3.06 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.644 |
| Storage Conditions | ?20°C |
GHS Safety & Compliance
- H302 — Harmful if swallowed
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-Dibromo-3,4-ethylenedioxythiophene?
The CAS number of 2,5-Dibromo-3,4-ethylenedioxythiophene is 174508-31-7.
What are the molecular formula and molecular weight of 2,5-Dibromo-3,4-ethylenedioxythiophene?
2,5-Dibromo-3,4-ethylenedioxythiophene has molecular formula C6H4Br2O2S and molecular weight 299.968 g/mol.
Is 2,5-Dibromo-3,4-ethylenedioxythiophene hazardous?
2,5-Dibromo-3,4-ethylenedioxythiophene has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 2,5-Dibromo-3,4-ethylenedioxythiophene?
For 2,5-Dibromo-3,4-ethylenedioxythiophene, Upstream Products: 3,4-Ethylenedioxythiophene, Diethyl 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylate, 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylic acid; Downstream Products: 7-Bromo-2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehyde.
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-Dibromo-3,4-ethylenedioxythiophene (CAS 174508-31-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1321432-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.