3,4-Dichloroisocoumarin

3,4-二氯异香豆素

Also known as: 3,4-Dichloro-1H-2-benzopyran-1-one, 3,4-Dichloro-2-benzopyran-1-one, 1H-2-Benzopyran-1-one, 3,4-dichloro-, 3,4-DCI, MFCD00036960

3,4-Dichloroisocoumarin (CAS 51050-59-0) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H4Cl2O2 and a molecular weight of 215.03300 g/mol. It is also known as 3,4-Dichloro-1H-2-benzopyran-1-one, 3,4-Dichloro-2-benzopyran-1-one and 1H-2-Benzopyran-1-one, 3,4-dichloro-. Key properties include a boiling point of 304.7ºC at 760 mmHg, a density of 1.53 g/cm3 and a flash point of 136.6ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
51050-59-0
Jingsj CID
J-19656-7
Molecular Formula
C9H4Cl2O2
Chinese Name
3,4-二氯异香豆素
Molecular Weight
215.03300 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point304.7ºC at 760 mmHg
Density1.53 g/cm3
Flash Point136.6ºC

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of 3,4-Dichloroisocoumarin?

The CAS number of 3,4-Dichloroisocoumarin is 51050-59-0.

What are the molecular formula and molecular weight of 3,4-Dichloroisocoumarin?

3,4-Dichloroisocoumarin has molecular formula C9H4Cl2O2 and molecular weight 215.03300 g/mol.

Is 3,4-Dichloroisocoumarin hazardous?

3,4-Dichloroisocoumarin has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "3,4-Dichloroisocoumarin (CAS 51050-59-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19656-7 (accessed 2026-10-23).

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