1-phenyl-1H-1,2,4-triazole-5-carboxylic acid

1-苯基-1H-1,2,4-三唑-5-羧酸

Also known as: 1H-1,2,4-Triazole-5-carboxylic acid, 1-phenyl-, 2-phenyl-1,2,4-triazole-3-carboxylic acid, NSC 609754

1-phenyl-1H-1,2,4-triazole-5-carboxylic acid (CAS 500865-95-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H7N3O2 and a molecular weight of 189.17100 g/mol. It is also known as 1H-1,2,4-Triazole-5-carboxylic acid, 1-phenyl-, 2-phenyl-1,2,4-triazole-3-carboxylic acid and NSC 609754. Key properties include a boiling point of 439ºC at 760 mmHg, a density of 1.39 g/cm3 and a flash point of 219.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
500865-95-2
Jingsj CID
J-1168124-3
Molecular Formula
C9H7N3O2
Chinese Name
1-苯基-1H-1,2,4-三唑-5-羧酸
Molecular Weight
189.17100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point439ºC at 760 mmHg
Density1.39 g/cm3
Flash Point219.3ºC

Frequently Asked Questions

What is the CAS number of 1-phenyl-1H-1,2,4-triazole-5-carboxylic acid?

The CAS number of 1-phenyl-1H-1,2,4-triazole-5-carboxylic acid is 500865-95-2.

What are the molecular formula and molecular weight of 1-phenyl-1H-1,2,4-triazole-5-carboxylic acid?

1-phenyl-1H-1,2,4-triazole-5-carboxylic acid has molecular formula C9H7N3O2 and molecular weight 189.17100 g/mol.

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

Last updated:

How to cite: Jingsj. "1-phenyl-1H-1,2,4-triazole-5-carboxylic acid (CAS 500865-95-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1168124-3 (accessed 2026-10-24).

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