4-Methoxybenzenesulfonic acid
Also known as: p-Methoxybenzenesulfonic acid, 4-Methoxybenzensulfonic acid, 4-methoxybenzenesulfonic acid, Benzenesulfonic acid, 4-methoxy-, Benzenesulfonic acid, p-methoxy-, 4-methoxylbenzenesulfonic acid
4-Methoxybenzenesulfonic acid (CAS 5857-42-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H8O4S and a molecular weight of 188.20100 g/mol. Key properties include a melting point of 86-88ºC, a boiling point of 193-194°C at 1 mmHg and a density of 1.381. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 5857-42-1
- Jingsj CID
- J-1356872-4
- Molecular Formula
- C7H8O4S
- Molecular Weight
- 188.20100 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 86-88ºC |
|---|---|
| Boiling Point | 193-194°C at 1 mmHg |
| Density | 1.381 |
| Exact Mass | 188.01400 |
| PSA | 71.98000 |
| LogP | 2.02270 |
Frequently Asked Questions
What is the CAS number of 4-Methoxybenzenesulfonic acid?
The CAS number of 4-Methoxybenzenesulfonic acid is 5857-42-1.
What are the molecular formula and molecular weight of 4-Methoxybenzenesulfonic acid?
4-Methoxybenzenesulfonic acid has molecular formula C7H8O4S and molecular weight 188.20100 g/mol.
What are the upstream and downstream products of 4-Methoxybenzenesulfonic acid?
For 4-Methoxybenzenesulfonic acid, Upstream Products: 4-Methoxythiophenol, Anisole, Bis(4-methoxyphenyl) disulfide; Downstream Products: 4-Methoxybenzenesulfonyl chloride, 4-Methoxythiophenol, 4-Bromoanisole.
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-Methoxybenzenesulfonic acid (CAS 5857-42-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1356872-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.