Potassium p-toluenethiosulfonate
对甲苯硫代磺酸钾
Also known as: p-Toluenethiosulfonic acid potassium salt, Potassium 4-methylbenzenethiosulfonate, Potassium thiotosylate, Potassium toluene-p-thiosulphonate, 4-Methylbenzenesulfonothioic acid potassium salt, Potassium 4-methylbenzenesulfonothioate, Benzenesulfonothioic acid, 4-methyl-, potassium salt
Potassium p-toluenethiosulfonate (CAS 28519-50-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H7KO2S2 and a molecular weight of 226.35800 g/mol. It is also known as p-Toluenethiosulfonic acid potassium salt, Potassium 4-methylbenzenethiosulfonate and Potassium thiotosylate. Key properties include a melting point of 227-229ºC(lit.), a boiling point of 341.4ºC at 760mmHg and a flash point of 160.3ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 28519-50-8
- Jingsj CID
- J-989480-8
- Molecular Formula
- C7H7KO2S2
- Chinese Name
- 对甲苯硫代磺酸钾
- Molecular Weight
- 226.35800 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 227-229ºC(lit.) |
|---|---|
| Boiling Point | 341.4ºC at 760mmHg |
| Flash Point | 160.3ºC |
| Exact Mass | 225.95200 |
| PSA | 80.60000 |
| LogP | 2.74690 |
| Vapor Pressure | 3.1E-05mmHg at 25°C |
| Refractive Index | 1.633 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 Potassium p-toluenethiosulfonate?
The CAS number of Potassium p-toluenethiosulfonate is 28519-50-8.
What are the molecular formula and molecular weight of Potassium p-toluenethiosulfonate?
Potassium p-toluenethiosulfonate has molecular formula C7H7KO2S2 and molecular weight 226.35800 g/mol.
Is Potassium p-toluenethiosulfonate hazardous?
Potassium p-toluenethiosulfonate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Potassium p-toluenethiosulfonate (CAS 28519-50-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-989480-8 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.