2,1,3-Benzothiadiazole-5-carboxylic acid

2,1,3-苯并噻二唑-5-甲酸

Also known as: benzo[c][1,2,5]thiadiazole-5-carboxylic acid, benzo[1,2,5]thiadiazole-5-carboxylic acid, 2,1,3-benzothiadiazol-5-carbonsaeure, 5-carboxy-2,1,3-benzothiadiazole, benzo-2,1,3-thiadiazole-5-carboxylic acid

2,1,3-Benzothiadiazole-5-carboxylic acid (CAS 16405-98-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4N2O2S and a molecular weight of 180.184 g/mol. It is also known as benzo[c][1,2,5]thiadiazole-5-carboxylic acid, benzo[1,2,5]thiadiazole-5-carboxylic acid and 2,1,3-benzothiadiazol-5-carbonsaeure. Key properties include a melting point of 229ºC, a boiling point of 368.7±15.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 176.8±20.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16405-98-4
Jingsj CID
J-1360353-1
Molecular Formula
C7H4N2O2S
Chinese Name
2,1,3-苯并噻二唑-5-甲酸
Molecular Weight
180.184 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point229ºC
Boiling Point368.7±15.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point176.8±20.4 °C

Frequently Asked Questions

What is the CAS number of 2,1,3-Benzothiadiazole-5-carboxylic acid?

The CAS number of 2,1,3-Benzothiadiazole-5-carboxylic acid is 16405-98-4.

What are the molecular formula and molecular weight of 2,1,3-Benzothiadiazole-5-carboxylic acid?

2,1,3-Benzothiadiazole-5-carboxylic acid has molecular formula C7H4N2O2S and molecular weight 180.184 g/mol.

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

Last updated:

How to cite: Jingsj. "2,1,3-Benzothiadiazole-5-carboxylic acid (CAS 16405-98-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1360353-1 (accessed 2026-10-25).

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