Methylphosphonyl difluoride

Methylphosphonyl difluoride

Identifiers
CAS number	676-99-3
SMILES	CP(F)(F)=O
Properties
Molecular formula	CH₃POF₂
Molar mass	100.00
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Methylphosphonyl difluoride (DF), also called methyl difluorophosphite, methylphosphonic difluoride, and difluoromethylphosphine oxide, is a chemical weapon precursor. It is a Schedule 1 substance in the sense of the Chemical Weapons Convention. It is used for production of sarin and soman. Its chemical formula is CH₃POF₂.

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Methylphosphonyl difluoride can be used as a component of binary chemical weapons; an example is the M687 artillery shell, where it is used together with a mixture of isopropyl alcohol and isopropyl amine, producing sarin.

Category: Chemical weapons