alpha-Toluenesulfonyl chloride
Also known as: Phenylmethanesulfonyl chloride, Benzylsulfonyl chloride, Benzenemethanesulfonyl chloride, Toluen-alpha-sulfonyl chloride, α-Toluenesulfonyl chloride, Benzylsulfochloride, Phenylmethanesulphonyl chloride, NSC 41894, MFCD00007455
alpha-Toluenesulfonyl chloride (CAS 1939-99-7) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C7H7ClO2S and a molecular weight of 190.647 g/mol. Key properties include a melting point of 92-94 °C(lit.), a boiling point of 288.2±19.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 128.1±21.5 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1939-99-7
- Jingsj CID
- J-41217-5
- Molecular Formula
- C7H7ClO2S
- Molecular Weight
- 190.647 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 92-94 °C(lit.) |
|---|---|
| Boiling Point | 288.2±19.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 128.1±21.5 °C |
| Exact Mass | 189.985519 |
| PSA | 42.52000 |
| LogP | 2.01 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.565 |
| Additional Property | decomposes |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
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 alpha-Toluenesulfonyl chloride?
The CAS number of alpha-Toluenesulfonyl chloride is 1939-99-7.
What are the molecular formula and molecular weight of alpha-Toluenesulfonyl chloride?
alpha-Toluenesulfonyl chloride has molecular formula C7H7ClO2S and molecular weight 190.647 g/mol.
Is alpha-Toluenesulfonyl chloride hazardous?
alpha-Toluenesulfonyl chloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "alpha-Toluenesulfonyl chloride (CAS 1939-99-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41217-5 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.