Methyl p-toluenesulfonate
Also known as: Methyl p-tosylate, Methyl tosylate, 4-Methylbenzenesulfonic acid methyl ester, Methyl 4-methylbenzenesulfonate, p-Toluenesulfonic acid methyl ester, Methyl para-toluenesulfonate, Methyl 4-toluenesulfonate, Methyl p-toluene sulfonate, methyltoluene-4-sulfonate, p-Toluolsulfonsaeure methyl ester, p-Tolylmethylsulfonate, toluene-4-sulfonic acid-methyl ester, EINECS 201-283-5, MFCD00008417, PTS1, MPTS, Methanol tosylate, Methyl ester of 4-methylbenzenesulfonic acid, Benzenesulfonic acid, 4-methyl-, methyl ester, 4-methyl-benzenesulfonic acid methyl ester
Methyl p-toluenesulfonate (CAS 80-48-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C8H10O3S and a molecular weight of 186.228 g/mol. Key properties include a melting point of 25-28 °C(lit.), a boiling point of 291.8±9.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 130.3±18.7 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H314 — Causes severe skin burns and eye damage and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 80-48-8
- Jingsj CID
- J-29782-8
- Molecular Formula
- C8H10O3S
- Molecular Weight
- 186.228 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 25-28 °C(lit.) |
|---|---|
| Boiling Point | 291.8±9.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 130.3±18.7 °C |
| Exact Mass | 186.035065 |
| PSA | 51.75000 |
| LogP | 1.30 |
| Additional Property | 6.45 (vs air) |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.517 |
| Additional Property | Insoluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H314 — Causes severe skin burns and eye damage
- H317 — May cause an allergic skin reaction
Customs & Trade Information
| HS Code | 2904909090 |
|---|---|
| Summary | HS:2904909090 sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Methyl p-toluenesulfonate?
The CAS number of Methyl p-toluenesulfonate is 80-48-8.
What are the molecular formula and molecular weight of Methyl p-toluenesulfonate?
Methyl p-toluenesulfonate has molecular formula C8H10O3S and molecular weight 186.228 g/mol.
Is Methyl p-toluenesulfonate hazardous?
Methyl p-toluenesulfonate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of Methyl p-toluenesulfonate?
For Methyl p-toluenesulfonate, Upstream Products: Methanol, p-Toluenesulfonic acid, p-Toluenesulfonyl chloride; Downstream Products: 5-ethyl-1-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one, p-Toluenesulfonic anhydride, Dimethyl sulfate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl p-toluenesulfonate (CAS 80-48-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29782-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.