p-Toluenesulfonic acid
Also known as: 4-methylbenzenesulfonic acid, toluene-4-sulfonic acid, p-tolylsulfonic acid, p-toluenesulphonic acid, tosic acid, PTSA
p-Toluenesulfonic acid (CAS 104-15-4) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H8O3S and a molecular weight of 172.202 g/mol. Key properties include a melting point of 106~107℃, a boiling point of 116 °C, a density of 1.3±0.1 g/cm3 and a flash point of 41 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 104-15-4
- Jingsj CID
- J-1361715-4
- Molecular Formula
- C7H8O3S
- Molecular Weight
- 172.202 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 106~107℃ |
|---|---|
| Boiling Point | 116 °C |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 41 °C |
| Exact Mass | 172.019409 |
| PSA | 62.75000 |
| LogP | 0.93 |
| Refractive Index | 1.563 |
| Additional Property | soluble |
Customs & Trade Information
| HS Code | 2904100000 |
|---|---|
| Summary | 2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of p-Toluenesulfonic acid?
The CAS number of p-Toluenesulfonic acid is 104-15-4.
What are the molecular formula and molecular weight of p-Toluenesulfonic acid?
p-Toluenesulfonic acid has molecular formula C7H8O3S and molecular weight 172.202 g/mol.
What are the upstream and downstream products of p-Toluenesulfonic acid?
For p-Toluenesulfonic acid, Upstream Products: p-Toluenesulfonyl chloride, p-Toluenethiol, Sodium p-toluenesulfonate; Downstream Products: CIS-2-OCTENE, E-2-Octene, octene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "p-Toluenesulfonic acid (CAS 104-15-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1361715-4 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.