Cyclopentanone p-toluenesulfonylhydrazone

Also known as: N'-cyclopentylidene-4-methylbenzenesulfonohydrazide, 2-cyclopentylidene-1-tosylhydrazine, Cyclopentanone tosylhydrazone, Benzenesulfonic acid, 4-methyl-, 2-cyclopentylidenehydrazide, N-(cyclopentylideneamino)-4-methylbenzenesulfonamide, N-Cyclopentylidene-4-methylbenzenesulfonohydrazide

Cyclopentanone p-toluenesulfonylhydrazone (CAS 17529-98-5) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C12H16N2O2S and a molecular weight of 252.33300 g/mol. Key properties include a melting point of 184°C(dec.)(lit.), a boiling point of 401.7ºC at 760mmHg, a density of 1.27g/cm3 and a flash point of 196.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 17529-98-5
Jingsj CID: J-1392295-7
Molecular Formula: C₁₂H₁₆N₂O₂S
Molecular Weight: 252.33300 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	184°C(dec.)(lit.)
Boiling Point	401.7ºC at 760mmHg
Density	1.27g/cm3
Flash Point	196.7ºC
Exact Mass	252.09300
PSA	66.91000
LogP	3.67500
Vapor Pressure	1.16E-06mmHg at 25°C
Refractive Index	1.608
Storage Conditions	2~8°C

Customs & Trade Information

HS Code	2935009090
Summary	2935009090 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 Cyclopentanone p-toluenesulfonylhydrazone?

The CAS number of Cyclopentanone p-toluenesulfonylhydrazone is 17529-98-5.

What are the molecular formula and molecular weight of Cyclopentanone p-toluenesulfonylhydrazone?

Cyclopentanone p-toluenesulfonylhydrazone has molecular formula C12H16N2O2S and molecular weight 252.33300 g/mol.

What are the upstream and downstream products of Cyclopentanone p-toluenesulfonylhydrazone?

For Cyclopentanone p-toluenesulfonylhydrazone, Upstream Products: Cyclopentanone, 4-Methylbenzenesulfonhydrazide; Downstream Products: Cyclopentyl phenyl ketone, 2-(Cyclopent-1-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, Cyclopentane.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Cyclopentanone p-toluenesulfonylhydrazone (CAS 17529-98-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1392295-7 (accessed 2026-11-09).

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