p-Toluenesulfonic acid monohydrate
Also known as: 4-Methylbenzenesulfonic acid monohydrate, Tosylic acid monohydrate, TsOH·H2O, p-Toluene sulfonic acid monohydrate, Benzenesulfonic acid, 4-methyl-, monohydrate, toluene-p-sulfonic acid monohydrate, UNII-3BTO78GAFF, MFCD00142137
p-Toluenesulfonic acid monohydrate (CAS 6192-52-5) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H10O4S and a molecular weight of 190.217 g/mol. Key properties include a melting point of 96-99 °C(lit.), a boiling point of 140°C 20mm, a density of 1,24 g/cm3 and a flash point of 180 °C. It is classified under GHS with signal word Danger and hazard statements H290, H314 — Causes severe skin burns and eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6192-52-5
- Jingsj CID
- J-45555-0
- Molecular Formula
- C7H10O4S
- Molecular Weight
- 190.217 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 96-99 °C(lit.) |
|---|---|
| Boiling Point | 140°C 20mm |
| Density | 1,24 g/cm3 |
| Flash Point | 180 °C |
| Exact Mass | 190.029984 |
| PSA | 71.98000 |
| LogP | 2.25820 |
| Additional Property | 5.9 (vs air) |
| Refractive Index | 1.382-1.384 |
| Additional Property | soluble |
GHS Safety & Compliance
- H290
- H314 — Causes severe skin burns and eye damage
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Tashiro S, et al. Non-covalent immobilisation of p-toluenesulfonic acid in a porous molecular crystal for size-specific acid-catalysed reactions. Chem Commun (Camb). 2016 Jun 8;52(49):7657-60. [2]. Quan XJ, et al. p-Toluenesulfonic acid mediated 1,3-dipolar cycloaddition of nitroolefins with NaN3 for synthesis of 4-aryl-NH-1,2,3-triazoles. Org Lett. 2014 Nov 7;16(21):5728-31. |
|---|
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of p-Toluenesulfonic acid monohydrate?
The CAS number of p-Toluenesulfonic acid monohydrate is 6192-52-5.
What are the molecular formula and molecular weight of p-Toluenesulfonic acid monohydrate?
p-Toluenesulfonic acid monohydrate has molecular formula C7H10O4S and molecular weight 190.217 g/mol.
Is p-Toluenesulfonic acid monohydrate hazardous?
p-Toluenesulfonic acid monohydrate has GHS signal word Danger and hazard statements H290; H314 — Causes severe skin burns and eye damage; H335 — May cause respiratory irritation.
What are the upstream and downstream products of p-Toluenesulfonic acid monohydrate?
For p-Toluenesulfonic acid monohydrate, Downstream Products: 2-((3-Oxocyclohex-1-enyl)amino)benzenecarbonitrile, Hexyl p-toluenesulfonate, alpha-Hydroxy-3-phenoxybenzeneacetonitrile.
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 monohydrate (CAS 6192-52-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45555-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.