Methylphosphonyl difluoride

Methylphosphonyl difluoride
Preferred IUPAC name Methylphosphonic difluoride
Other names Methylphosphonyl difluoride Methylphosphonoyl difluoride
Identifiers
CAS number	676-99-3
PubChem	69610 Y
ChemSpider	62813 Y
MeSH	difluoride Methylphosphonic difluoride
Beilstein Reference	4-04-00-03508
Jmol-3D images	Image 1
SMILES CP(F)(F)=O
InChI InChI=1S/CH3F2OP/c1-5(2,3)4/h1H3 Key: PQIOSYKVBBWRRI-UHFFFAOYSA-N
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 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.

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.