3,4-Ethylenedioxythiophene
Also known as: EDOT, EDT, 2,3-Dihydrothieno[3,4-b]-1,4-dioxin, 2,3-Dihydrothieno[3,4-b][1,4]dioxine, 3,4-Ethylenedioxythiophene, Thieno[3,4-b]-1,4-dioxin, 2,3-dihydro-, AKOS BBS-00006360, MFCD02093622
3,4-Ethylenedioxythiophene (CAS 126213-50-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6O2S and a molecular weight of 142.176 g/mol. Key properties include a melting point of 10 °C, a boiling point of 210.5±19.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 81.1±21.5 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H311 — Toxic in contact with skin and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 126213-50-1
- Jingsj CID
- J-1492454-0
- Molecular Formula
- C6H6O2S
- Molecular Weight
- 142.176 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 10 °C |
|---|---|
| Boiling Point | 210.5±19.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 81.1±21.5 °C |
| Exact Mass | 142.008850 |
| PSA | 46.70000 |
| LogP | 1.56 |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.571 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H311 — Toxic in contact with skin
- H319 — Causes serious eye 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 3,4-Ethylenedioxythiophene?
The CAS number of 3,4-Ethylenedioxythiophene is 126213-50-1.
What are the molecular formula and molecular weight of 3,4-Ethylenedioxythiophene?
3,4-Ethylenedioxythiophene has molecular formula C6H6O2S and molecular weight 142.176 g/mol.
Is 3,4-Ethylenedioxythiophene hazardous?
3,4-Ethylenedioxythiophene has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H311 — Toxic in contact with skin; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 3,4-Ethylenedioxythiophene?
For 3,4-Ethylenedioxythiophene, Upstream Products: 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylic acid, 3,4-Dimethoxythiophene, Ethylene glycol; Downstream Products: 2,5-Dibromo-3,4-ethylenedioxythiophene, 7-Bromo-2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehyde, 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Ethylenedioxythiophene (CAS 126213-50-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1492454-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.