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(Chloromethyl)phosphonic dichloride

Also known as: Chloromethylphosphonic dichloride, Chloromethanephosphonic dichloride, Chloromethyl dichlorophosphine oxide, Dichloro(chloromethyl)phosphine oxide, NSC 9350, EINECS 217-848-4, MFCD00002072, Phosphonic dichloride, P-(chloromethyl)-

(Chloromethyl)phosphonic dichloride (CAS 1983-26-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH2Cl3OP and a molecular weight of 167.35900 g/mol. Key properties include a boiling point of 78-82ºC10 mm Hg(lit.), a density of 1.638 g/mL at 25ºC(lit.) and a flash point of >110.0 °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 Nov 3, 2026.

CAS No.
1983-26-2
Jingsj CID
J-47361-0
Molecular Formula
CH2Cl3OP
Molecular Weight
167.35900 g/mol
Category
Organic Acids
Last updated
11/3/2026

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Physicochemical Properties

Boiling Point78-82ºC10 mm Hg(lit.)
Density1.638 g/mL at 25ºC(lit.)
Flash Point>110.0 °C
Exact Mass165.89100
PSA26.88000
LogP2.85340
Vapor Pressure0.381mmHg at 25°C
Refractive Indexn20/D 1.497(lit.)

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H314 — Causes severe skin burns and eye damage
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2931900090
Summary2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (Chloromethyl)phosphonic dichloride?

The CAS number of (Chloromethyl)phosphonic dichloride is 1983-26-2.

What are the molecular formula and molecular weight of (Chloromethyl)phosphonic dichloride?

(Chloromethyl)phosphonic dichloride has molecular formula CH2Cl3OP and molecular weight 167.35900 g/mol.

Is (Chloromethyl)phosphonic dichloride hazardous?

(Chloromethyl)phosphonic dichloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H335 — May cause respiratory irritation.

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

Last updated:

How to cite: Jingsj. "(Chloromethyl)phosphonic dichloride (CAS 1983-26-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47361-0 (accessed 2026-11-09).

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