1-Hydrazino-phthalazine

1(2H)-酞嗪酮腙

Also known as: (1E)-1-Hydrazono-1,2-dihydrophthalazine, (E)-1-Hydrazono-1,2-dihydrophthalazine, 1(2H)-Phthalazinone, hydrazone, (E)- (9CI), 1-(phthalazin-1-yl)hydrazine, 1-hydrazino-phthalazine, apresolin, apresoline, apressin, aprezolin, ciba5968, hidralazin, hipoftalin

1-Hydrazino-phthalazine (CAS 59275-69-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H8N4 and a molecular weight of 160.17600 g/mol. It is also known as (1E)-1-Hydrazono-1,2-dihydrophthalazine, (E)-1-Hydrazono-1,2-dihydrophthalazine and 1(2H)-Phthalazinone, hydrazone, (E)- (9CI). Key properties include a boiling point of 491.9ºC at 760 mmHg, a density of 1.373 g/cm3 and a flash point of 251.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 59275-69-3
Jingsj CID: J-1520858-9
Molecular Formula: C₈H₈N₄
Chinese Name: 1(2H)-酞嗪酮腙
Molecular Weight: 160.17600 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	491.9ºC at 760 mmHg
Density	1.373 g/cm3
Flash Point	251.3ºC

Frequently Asked Questions

What is the CAS number of 1-Hydrazino-phthalazine?

The CAS number of 1-Hydrazino-phthalazine is 59275-69-3.

What are the molecular formula and molecular weight of 1-Hydrazino-phthalazine?

1-Hydrazino-phthalazine has molecular formula C8H8N4 and molecular weight 160.17600 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1-Hydrazino-phthalazine (CAS 59275-69-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520858-9 (accessed 2026-10-25).

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