3,4-Dichlorophenyl isothiocyanate

3,4-二氯异硫氰酸苯酯

Also known as: 1,2-dichloro-4-isothiocyanatobenzene, Benzene, 1,2-dichloro-4-isothiocyanato-, Isothiocyanic acid, 3,4-dichlorophenyl ester, 1,2-Dichloro-4-isothiocyanatobenzene, 3,4-Dichlorophenylisothiocyanate

3,4-Dichlorophenyl isothiocyanate (CAS 6590-94-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H3Cl2NS and a molecular weight of 204.07600 g/mol. It is also known as 1,2-dichloro-4-isothiocyanatobenzene, Benzene, 1,2-dichloro-4-isothiocyanato- and Isothiocyanic acid, 3,4-dichlorophenyl ester. Key properties include a boiling point of 134-136 °C7 mm Hg(lit.), a density of 1.422 g/mL at 25 °C(lit.) and a flash point of >230 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6590-94-9
Jingsj CID
J-44612-7
Molecular Formula
C7H3Cl2NS
Chinese Name
3,4-二氯异硫氰酸苯酯
Molecular Weight
204.07600 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point134-136 °C7 mm Hg(lit.)
Density1.422 g/mL at 25 °C(lit.)
Flash Point>230 °F

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of 3,4-Dichlorophenyl isothiocyanate?

The CAS number of 3,4-Dichlorophenyl isothiocyanate is 6590-94-9.

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

3,4-Dichlorophenyl isothiocyanate has molecular formula C7H3Cl2NS and molecular weight 204.07600 g/mol.

Is 3,4-Dichlorophenyl isothiocyanate hazardous?

3,4-Dichlorophenyl isothiocyanate 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-Dichlorophenyl isothiocyanate (CAS 6590-94-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44612-7 (accessed 2026-10-22).

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