3,4-Dichloro-1,2-thiazole-5-carboxylic acid

3,4-二氯异噻唑-5-羧酸

Also known as: 3,4-Dichloroisothiazole-5-carboxylic acid, 3,4-Dichloro-5-isothiazolecarboxylic acid, 3,4-Dichloro-5-carboxyisothiazole, 5-Isothiazolecarboxylic acid, 3,4-dichloro-, Isotianil

3,4-Dichloro-1,2-thiazole-5-carboxylic acid (CAS 18480-53-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4HCl2NO2S and a molecular weight of 198.027 g/mol. It is also known as 3,4-Dichloroisothiazole-5-carboxylic acid, 3,4-Dichloro-5-isothiazolecarboxylic acid and 3,4-Dichloro-5-carboxyisothiazole. Key properties include a melting point of 175-177ºC, a boiling point of 205.9±40.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 78.4±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
18480-53-0
Jingsj CID
J-1080829-8
Molecular Formula
C4HCl2NO2S
Chinese Name
3,4-二氯异噻唑-5-羧酸
Molecular Weight
198.027 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point175-177ºC
Boiling Point205.9±40.0 °C at 760 mmHg
Density1.8±0.1 g/cm3
Flash Point78.4±27.3 °C

Frequently Asked Questions

What is the CAS number of 3,4-Dichloro-1,2-thiazole-5-carboxylic acid?

The CAS number of 3,4-Dichloro-1,2-thiazole-5-carboxylic acid is 18480-53-0.

What are the molecular formula and molecular weight of 3,4-Dichloro-1,2-thiazole-5-carboxylic acid?

3,4-Dichloro-1,2-thiazole-5-carboxylic acid has molecular formula C4HCl2NO2S and molecular weight 198.027 g/mol.

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

Last updated:

How to cite: Jingsj. "3,4-Dichloro-1,2-thiazole-5-carboxylic acid (CAS 18480-53-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1080829-8 (accessed 2026-10-25).

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