1-Ethynyl-4-(methylsulfonyl)benzene
Also known as: 1-Ethynyl-4-(Methylsulfonyl)benzene, 4-(Methylsulfonyl)phenylacetylene, 1-Ethynyl-4-Methanesulfonyl-benzene, Benzene, 1-ethynyl-4-(Methylsulfonyl)-, 1-ethynyl-4-methylsulfonylbenzene, 1-ethynyl-4-(methylsulfonyl), 1-ethynyl-4-methanesulfonyl-benzene, p-ethynylbenzenesulfonamide
1-Ethynyl-4-(methylsulfonyl)benzene (CAS 340771-31-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H8O2S and a molecular weight of 180.22400 g/mol. Key properties include a melting point of 95-106°C, a boiling point of 327.749ºC at 760 mmHg, a density of 1.254g/cm3 and a flash point of 187.645ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 340771-31-5
- Jingsj CID
- J-1067941-1
- Molecular Formula
- C9H8O2S
- Molecular Weight
- 180.22400 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 95-106°C |
|---|---|
| Boiling Point | 327.749ºC at 760 mmHg |
| Density | 1.254g/cm3 |
| Flash Point | 187.645ºC |
| Exact Mass | 180.02500 |
| PSA | 42.52000 |
| LogP | 2.15220 |
| Refractive Index | 1.571 |
| Storage Conditions | 2-8°C |
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 1-Ethynyl-4-(methylsulfonyl)benzene?
The CAS number of 1-Ethynyl-4-(methylsulfonyl)benzene is 340771-31-5.
What are the molecular formula and molecular weight of 1-Ethynyl-4-(methylsulfonyl)benzene?
1-Ethynyl-4-(methylsulfonyl)benzene has molecular formula C9H8O2S and molecular weight 180.22400 g/mol.
What are the upstream and downstream products of 1-Ethynyl-4-(methylsulfonyl)benzene?
For 1-Ethynyl-4-(methylsulfonyl)benzene, Upstream Products: 4-Bromophenyl methyl sulfone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Ethynyl-4-(methylsulfonyl)benzene (CAS 340771-31-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1067941-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.