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2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one

2-氯-4H-1,3,2-苯并二氧磷-4-酮

Also known as: 2-chloro-1,3,2-benzodioxaphosphinin-4-one, 2-chloro-4H-benzo[d][1,3,2]dioxaphosphinin-4-one, salicylchlorophosphite, SalPCl, Van Boom's reagent, MFCD00013353

2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one (CAS 5381-99-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H4ClO3P and a molecular weight of 202.53200 g/mol. It is also known as 2-chloro-1,3,2-benzodioxaphosphinin-4-one, 2-chloro-4H-benzo[d][1,3,2]dioxaphosphinin-4-one and salicylchlorophosphite. Key properties include a melting point of 36-40 °C(lit.), a boiling point of 127-128 °C11 mm Hg(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.
5381-99-7
Jingsj CID
J-6651-8
Molecular Formula
C7H4ClO3P
Chinese Name
2-氯-4H-1,3,2-苯并二氧磷-4-酮
Molecular Weight
202.53200 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point36-40 °C(lit.)
Boiling Point127-128 °C11 mm Hg(lit.)
Flash Point>230 °F

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one?

The CAS number of 2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one is 5381-99-7.

What are the molecular formula and molecular weight of 2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one?

2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one has molecular formula C7H4ClO3P and molecular weight 202.53200 g/mol.

Is 2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one hazardous?

2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one 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. "2-chloro-4H-1,3,2-benzodioxaphosphorin-4-one (CAS 5381-99-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6651-8 (accessed 2026-10-24).

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