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4-Vinylbenzenesulfonamide

Also known as: 4-Sulfamoylstyrene, 4-Sulfonamidostyrene, 4-Vinylbenzenesulfonamide, 4-ethenylbenzenesulfonamide, 4-styrenesulfonamide, 4-sulfamoyl phenylethylene, p-Vinylbenzenesulfonamide, p-styrene sulfonamide, P-SULFONAMIDO STYRENE, Benzenesulfonamide, 4-ethenyl-, Benzenesulfonamide, 4-ethenyl- (9CI)

4-Vinylbenzenesulfonamide (CAS 2633-64-9) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C8H9NO2S and a molecular weight of 183.22800 g/mol. Key properties include a melting point of 137-139ºC, a boiling point of 351.1ºC at 760 mmHg, a density of 1.269g/cm3 and a flash point of 166.2℃. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2633-64-9
Jingsj CID
J-1492694-4
Molecular Formula
C8H9NO2S
Molecular Weight
183.22800 g/mol
Category
Organic Bases
Last updated
8/21/2026
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Physicochemical Properties

Melting Point137-139ºC
Boiling Point351.1ºC at 760 mmHg
Density1.269g/cm3
Flash Point166.2℃
Exact Mass183.03500
PSA68.54000
LogP2.75810
Vapor Pressure4.19E-05mmHg at 25°C
Refractive Index1.582

Customs & Trade Information

HS Code2935009090
Summary2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of 4-Vinylbenzenesulfonamide?

The CAS number of 4-Vinylbenzenesulfonamide is 2633-64-9.

What are the molecular formula and molecular weight of 4-Vinylbenzenesulfonamide?

4-Vinylbenzenesulfonamide has molecular formula C8H9NO2S and molecular weight 183.22800 g/mol.

What are the upstream and downstream products of 4-Vinylbenzenesulfonamide?

For 4-Vinylbenzenesulfonamide, Upstream Products: 4-Ethenylbenzenesulfonyl chloride, Sodium 4-vinylbenzenesulfonate, 4-(2-Chloroethyl)benzenesulfonyl chloride.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Vinylbenzenesulfonamide (CAS 2633-64-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1492694-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.