Methyldichlorophosphine

Methyldichlorophosphine (alternatively known as dichloro(methyl)phosphane and methyl phosphonous dichloride) is an organophosphorus compound with the chemical formula CH3Cl2P. It is a colorless, corrosive, flammable, and highly reactive liquid with a pungent odor. It is also extremely toxic if inhaled, can cause burns upon contact with the skin and eyes, and releases fumes of hydrochloric acid in moist environments.[1]

Methyldichlorophosphine
Names
IUPAC name
Dichloro(methyl)phosphane
Other names
Methyl phosphonous dichloride, Dichloromethylphosphine
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 211-631-8
UN number 2845
Properties
CH3Cl2P
Molar mass 116.91 g·mol−1
Appearance Colorless liquid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Methyldichlorophosphine belongs to the group of halophosphines, which are used as intermediates in the production of plant protection agents, stabilizers for plastics, and catalysts. It is a precursor of the herbicide Glufosinate. It is also used in the production of flameproofing compounds.[2]

Methyldichlorophosphine has a number of potential uses, but it is often used in the manufacture of nerve agents. When reacted with sulfuryl chloride it produces methylphosphonic acid dichloride, a direct chemical precursor to the nerve agents sarin, soman, and VX.

References
  1. Pubchem. "Dichloro(methyl)phosphane". pubchem.ncbi.nlm.nih.gov. Retrieved 19 April 2018.
  2. "Phosphorus Compounds, Organic", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), 2007, doi:10.1002/14356007.a19_545.pub2
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