2-Chloro-1,3,2-dioxaphospholane

Also known as: Ethylene chlorophosphite, Ethylene cyclochlorophosphite, Ethylene cyclo-chlorophosphite, Ethylenephosphorochloridite, 1,3,2-Dioxaphospholane, 2-chloro-, 2-Chloro-1,3,2-dioxaphosphorane

2-Chloro-1,3,2-dioxaphospholane (CAS 822-39-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C2H4ClO2P and a molecular weight of 126.479 g/mol. Key properties include a melting point of -28ºC, a boiling point of 117.4±7.0 °C at 760 mmHg, a density of 1.422 g/mL at 25 °C(lit.) and a flash point of 24.8±18.2 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 822-39-9
Jingsj CID: J-40296-0
Molecular Formula: C₂H₄ClO₂P
Molecular Weight: 126.479 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-28ºC
Boiling Point	117.4±7.0 °C at 760 mmHg
Density	1.422 g/mL at 25 °C(lit.)
Flash Point	24.8±18.2 °C
Exact Mass	125.963745
PSA	32.05000
LogP	0.98
Vapor Pressure	20.8±0.2 mmHg at 25°C
Refractive Index	n20/D 1.489(lit.)

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

H314 — Causes severe skin burns and eye damage
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 2-Chloro-1,3,2-dioxaphospholane?

The CAS number of 2-Chloro-1,3,2-dioxaphospholane is 822-39-9.

What are the molecular formula and molecular weight of 2-Chloro-1,3,2-dioxaphospholane?

2-Chloro-1,3,2-dioxaphospholane has molecular formula C2H4ClO2P and molecular weight 126.479 g/mol.

Is 2-Chloro-1,3,2-dioxaphospholane hazardous?

2-Chloro-1,3,2-dioxaphospholane has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 2-Chloro-1,3,2-dioxaphospholane?

For 2-Chloro-1,3,2-dioxaphospholane, Upstream Products: Ethylene glycol, Dichloromethane, Phosphorus trichloride; Downstream Products: 2-Chloroethylphosphoryl Dichloride, 2-Chloro-1,3,2-dioxaphospholane 2-oxide.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Chloro-1,3,2-dioxaphospholane (CAS 822-39-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40296-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.