4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one

4-氯-5-肼-2-苯基-2,3-二氢哒嗪-3-酮

Also known as: 3(2H)-Pyridazinone,4-chloro-5-hydrazinyl-2-phenyl-, 4-CHLORO-5-HYDRAZINO-2-PHENYL-2,3-DIHYDROPYRIDAZIN-3-ONE, 4-CHLORO-5-HYDRAZINO-2-PHENYLPYRIDAZIN-3(2H)-ONE, 4-Chlor-5-hydrazino-2-phenyl-3-pyridazon, 4-chloro-5-hydrazino-2-phenyl-2,3-dihydropyridazin-3-one, NSC 69010, OTAVA-BB BB0149270038

4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one (CAS 1210-32-8) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C10H9ClN4O and a molecular weight of 236.65800 g/mol. It is also known as 3(2H)-Pyridazinone,4-chloro-5-hydrazinyl-2-phenyl-, 4-CHLORO-5-HYDRAZINO-2-PHENYL-2,3-DIHYDROPYRIDAZIN-3-ONE and 4-CHLORO-5-HYDRAZINO-2-PHENYLPYRIDAZIN-3(2H)-ONE. Key properties include a melting point of 169ºC, a boiling point of 372.7ºC at 760mmHg, a density of 1.47g/cm3 and a flash point of 179.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1210-32-8
Jingsj CID
J-1116740-0
Molecular Formula
C10H9ClN4O
Chinese Name
4-氯-5-肼-2-苯基-2,3-二氢哒嗪-3-酮
Molecular Weight
236.65800 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point169ºC
Boiling Point372.7ºC at 760mmHg
Density1.47g/cm3
Flash Point179.2ºC

Frequently Asked Questions

What is the CAS number of 4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one?

The CAS number of 4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one is 1210-32-8.

What are the molecular formula and molecular weight of 4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one?

4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one has molecular formula C10H9ClN4O and molecular weight 236.65800 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Chloro-5-hydrazinyl-2-phenylpyridazin-3(2H)-one (CAS 1210-32-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1116740-0 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.