4-Chlorobenzyl isocyanate

4-氯苄基异氰酸酯

Also known as: 1-chloro-4-(isocyanatomethyl)benzene, p-chlorobenzyl isocyanate, Benzene, 1-chloro-4-(isocyanatomethyl)-, 1-chloro-4-isocyanatomethylbenzene, MFCD04039910

4-Chlorobenzyl isocyanate (CAS 30280-44-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H6ClNO and a molecular weight of 167.59200 g/mol. It is also known as 1-chloro-4-(isocyanatomethyl)benzene, p-chlorobenzyl isocyanate and Benzene, 1-chloro-4-(isocyanatomethyl)-. Key properties include a boiling point of 233-234ºC(lit.), a density of 1.265 g/mL at 25ºC(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.
30280-44-5
Jingsj CID
J-31267-9
Molecular Formula
C8H6ClNO
Chinese Name
4-氯苄基异氰酸酯
Molecular Weight
167.59200 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point233-234ºC(lit.)
Density1.265 g/mL at 25ºC(lit.)
Flash Point>230 °F

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of 4-Chlorobenzyl isocyanate?

The CAS number of 4-Chlorobenzyl isocyanate is 30280-44-5.

What are the molecular formula and molecular weight of 4-Chlorobenzyl isocyanate?

4-Chlorobenzyl isocyanate has molecular formula C8H6ClNO and molecular weight 167.59200 g/mol.

Is 4-Chlorobenzyl isocyanate hazardous?

4-Chlorobenzyl isocyanate 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. "4-Chlorobenzyl isocyanate (CAS 30280-44-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31267-9 (accessed 2026-10-23).

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