2-Thiophenesulfonic acid
Also known as: Thiophene-2-sulfonic acid, 2-Thienylsulfonic acid, Thiophen-2-sulfonsaeure, Thiophenesulfonic acid
2-Thiophenesulfonic acid (CAS 79-84-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H4O3S2 and a molecular weight of 164.20300 g/mol. Key properties include a melting point of 71-72ºC and a density of 1.614 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 79-84-5
- Jingsj CID
- J-1319285-3
- Molecular Formula
- C4H4O3S2
- Molecular Weight
- 164.20300 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 71-72ºC |
|---|---|
| Density | 1.614 g/cm3 |
| Exact Mass | 163.96000 |
| PSA | 90.99000 |
| LogP | 2.07560 |
| Refractive Index | 1.609 |
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-Thiophenesulfonic acid?
The CAS number of 2-Thiophenesulfonic acid is 79-84-5.
What are the molecular formula and molecular weight of 2-Thiophenesulfonic acid?
2-Thiophenesulfonic acid has molecular formula C4H4O3S2 and molecular weight 164.20300 g/mol.
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-Thiophenesulfonic acid (CAS 79-84-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1319285-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.