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Home/Compounds/Industrial Chemical/Dimethyl hydrogen phosphite
C2H7O3P
110.05 g/mol
Industrial ChemicalDanger

Bis(hydroxymethyl)phosphine oxide

CAS868-85-9EC212-783-8
Category
Industrial Chemical
Compound Class
Ester
Primary Use
intermediate for chemical synthesis

Bis(hydroxymethyl)phosphine oxide is an organophosphorus compound that functions as a chemical intermediate. It is primarily used in industrial synthesis and research applications.

chemical intermediate for synthesis

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

Controlled substances

Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.

Relevant lists:Australia Group Chemical Weapons PrecursorsCWC Schedule 3

CAS 868-85-9

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solvent and heat transfer medium

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Safety Reference

Flammable
Flammable
Toxic
Toxic
Harmful
Harmful
Health Hazard
Health Hazard
Environmental Hazard
Environmental Hazard
Danger
H226Flammable liquid and vapour
H311Toxic in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H341Suspected of causing genetic defects
H351Suspected of causing cancer
H412Harmful to aquatic life with long lasting effects
H227
H320Causes eye irritation
H371May cause damage to organs
H372Causes damage to organs through prolonged or repeated exposure
Regulatory Compliance3
  • Australia Group Chemical Weapons PrecursorsGlobalRegulation
    Listed· listed since 2023-11-21Source
  • CWC Schedule 3GlobalInternational Convention
    ListedSource
  • California Proposition 65USRegulation
    Listed· listed since 2023-08-11Source

Customs Tariff Classification

The international HS code for Bis(hydroxymethyl)phosphine oxide (CAS 868-85-9) is 2920.21.

HS code (international, 6-digit)

2920.21

EU CN code (8-digit)

2920 21 00

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

methoxyphosphonoyloxymethane

InChIKey

HZCDANOFLILNSA-UHFFFAOYSA-N

SMILES

COP(=O)OC

Synonyms (14)
  • Dimethoxyphosphine oxide
  • Dimethyl acid phosphite
  • Dimethyl hydrogen phosphite
  • Dimethyl hydrogen phosphonate
  • Dimethyl phosphite
  • Dimethyl phosphonate
  • Dimethylfosfit
  • Dimethylfosfonat
  • Hydrogen dimethyl phosphite