4-Chlorobenzenesulfinic acid
Also known as: p-chlorobenzenesulphinic acid, Benzenesulfinic acid, 4-chloro-, 4-Chlorobenzenesulfinicacid, 4-chlorobenzenesulphinic acid, P-CHLORO BENZENE SULFINIC ACID
4-Chlorobenzenesulfinic acid (CAS 100-03-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H5ClO2S and a molecular weight of 176.621 g/mol. Key properties include a melting point of 93 - 95ºC, a boiling point of 363.9±44.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 173.9±28.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 100-03-8
- Jingsj CID
- J-1365027-6
- Molecular Formula
- C6H5ClO2S
- Molecular Weight
- 176.621 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 93 - 95ºC |
|---|---|
| Boiling Point | 363.9±44.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 173.9±28.4 °C |
| Exact Mass | 175.969879 |
| PSA | 56.51000 |
| LogP | 1.09 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.695 |
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Chlorobenzenesulfinic acid?
The CAS number of 4-Chlorobenzenesulfinic acid is 100-03-8.
What are the molecular formula and molecular weight of 4-Chlorobenzenesulfinic acid?
4-Chlorobenzenesulfinic acid has molecular formula C6H5ClO2S and molecular weight 176.621 g/mol.
What are the upstream and downstream products of 4-Chlorobenzenesulfinic acid?
For 4-Chlorobenzenesulfinic acid, Upstream Products: 4-Chlorobenzenesulfonyl chloride, Sodium 4-chlorobenzenesulfinate, Chlorobenzene; Downstream Products: 4-(Trifluoromethylsulfonyl)chlorobenzene, Benzenesulfinic acid, 4,4'-Dichlorobenzophenone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Chlorobenzenesulfinic acid (CAS 100-03-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1365027-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.