Ethynyl p-tolyl sulfone
Also known as: 1-(Ethynylsulfonyl)-4-methylbenzene, 1-ethynylsulfonyl-4-methylbenzene, Ethynyl 4-methylphenyl sulfone, p-Toluenesulfonylacetylene, p-tolylsulfonylacetylene, Tosylacetylene
Ethynyl p-tolyl sulfone (CAS 13894-21-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C9H8O2S and a molecular weight of 180.224 g/mol. Key properties include a melting point of 73-74ºC(lit.), a boiling point of 297.9±33.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 155.6±18.1 °C. 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.
- 13894-21-8
- Jingsj CID
- J-18407-6
- Molecular Formula
- C9H8O2S
- Molecular Weight
- 180.224 g/mol
- Category
- Solvents
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 73-74ºC(lit.) |
|---|---|
| Boiling Point | 297.9±33.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 155.6±18.1 °C |
| Exact Mass | 180.024506 |
| PSA | 42.52000 |
| LogP | 2.43 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.553 |
| Additional Property | organic solvents: soluble(lit.) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2904100000 |
|---|---|
| Summary | 2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Ethynyl p-tolyl sulfone?
The CAS number of Ethynyl p-tolyl sulfone is 13894-21-8.
What are the molecular formula and molecular weight of Ethynyl p-tolyl sulfone?
Ethynyl p-tolyl sulfone has molecular formula C9H8O2S and molecular weight 180.224 g/mol.
Is Ethynyl p-tolyl sulfone hazardous?
Ethynyl p-tolyl sulfone 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 such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Ethynyl p-tolyl sulfone (CAS 13894-21-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18407-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.