p-Toluenesulfonamide
Also known as: 4-Methylbenzenesulfonamide, 4-Toluenesulfonamide, p-Tosylamide, Tosylamide, P-TOLUENESULFONAMIDE, P-TOLUENESULPHONAMIDE, P-TOLUENESULFONYLAMIDE, Uniplex 173, 4-TOLUENESULFONIC ACID AMIDE, ZSWR D1
p-Toluenesulfonamide (CAS 70-55-3) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H9NO2S and a molecular weight of 171.22 g/mol. Key properties include a melting point of 134-137 °C(lit.), a boiling point of 322.2±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 148.6±25.9 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 70-55-3
- Jingsj CID
- J-38437-5
- Molecular Formula
- C7H9NO2S
- Molecular Weight
- 171.22 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 134-137 °C(lit.) |
|---|---|
| Boiling Point | 322.2±35.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 148.6±25.9 °C |
| Exact Mass | 171.035400 |
| PSA | 68.54000 |
| LogP | 0.79 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.564 |
| Additional Property | 0.32 g/100 mL (25 º C) |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2935009090 |
|---|---|
| Summary | 2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0% |
Frequently Asked Questions
What is the CAS number of p-Toluenesulfonamide?
The CAS number of p-Toluenesulfonamide is 70-55-3.
What are the molecular formula and molecular weight of p-Toluenesulfonamide?
p-Toluenesulfonamide has molecular formula C7H9NO2S and molecular weight 171.22 g/mol.
Is p-Toluenesulfonamide hazardous?
p-Toluenesulfonamide has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of p-Toluenesulfonamide?
For p-Toluenesulfonamide, Upstream Products: p-Toluenesulfonyl chloride, 4-Methylbenzenesulfinamide, p-Toluenethiol; Downstream Products: Benzoic acid, 4-(aminosulfonyl)-, hydrazide, p-Toluenesulfonyl isocyanate, N,N-Dichloro-p-toluenesulfonamide.
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-Toluenesulfonamide (CAS 70-55-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38437-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.