1-Chloromethyl-2,4-diisocyanatobenzene

1-氯甲基-2,4-二异氰基苯

Also known as: 1-(chloromethyl)-2,4-diisocyanatobenzene, 4-Chloromethyl-1,3-phenylene diisocyanate, Benzene, 1-(chloromethyl)-2,4-diisocyanato-, 1-CHLOROMETHYL-2,4-DIISOCYANATOBENZENE 97%, 1-Chloromethyl-2,4-diisocyanatobenzene,97%, 1-Chloromethyl-2,4-diisocyanatobenzene,98%

1-Chloromethyl-2,4-diisocyanatobenzene (CAS 51979-57-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H5ClN2O2 and a molecular weight of 208.60100 g/mol. It is also known as 1-(chloromethyl)-2,4-diisocyanatobenzene, 4-Chloromethyl-1,3-phenylene diisocyanate and Benzene, 1-(chloromethyl)-2,4-diisocyanato-. Key properties include a boiling point of 152-155ºC11 mm Hg(lit.), a density of 1.362 g/mL at 25ºC(lit.) and a flash point of >230 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
51979-57-8
Jingsj CID
J-1343978-5
Molecular Formula
C9H5ClN2O2
Chinese Name
1-氯甲基-2,4-二异氰基苯
Molecular Weight
208.60100 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point152-155ºC11 mm Hg(lit.)
Density1.362 g/mL at 25ºC(lit.)
Flash Point>230 °F

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-Chloromethyl-2,4-diisocyanatobenzene?

The CAS number of 1-Chloromethyl-2,4-diisocyanatobenzene is 51979-57-8.

What are the molecular formula and molecular weight of 1-Chloromethyl-2,4-diisocyanatobenzene?

1-Chloromethyl-2,4-diisocyanatobenzene has molecular formula C9H5ClN2O2 and molecular weight 208.60100 g/mol.

Is 1-Chloromethyl-2,4-diisocyanatobenzene hazardous?

1-Chloromethyl-2,4-diisocyanatobenzene has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1-Chloromethyl-2,4-diisocyanatobenzene (CAS 51979-57-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1343978-5 (accessed 2026-10-25).

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