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Methylphosphonyl dichloride (DC) or dichloro is an organophosphorus compound. It has commercial application in oligonucleotide synthesis, [ 1 ] but is most notable as being a precursor to several chemical weapons agents.
Methyldichlorophosphine is produced by alkylation of phosphorus trichloride with methyl iodide followed by reduction of the resulting phosphonium salt with iron powder: [2] [3] CH 3 I + PCl 3 + AlCl 3 → [CH 3 PCl 3] + AlCl 3 I − [CH 3 PCl 3] + AlCl 3 I − + Fe → CH 3 PCl 2 + FeICl + AlCl 3
The phosphorus center is tetrahedral and is bonded to a methyl group, two OH groups and an oxygen. Methylphosphonic acid is a white, non-volatile solid that is poorly soluble in organic solvent but soluble in water and common alcohols. [2]
Dimethyl methylphosphonate can be prepared from trimethyl phosphite and a halomethane (e.g. iodomethane) via the Michaelis–Arbuzov reaction. [2]Dimethyl methylphosphonate is a schedule 2 chemical as it may be used in the production of chemical weapons.
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This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002).The list can be found as an appendix to 40 CFR 355. [1]
Dichlorophenylphosphine is an organophosphorus compound with the formula C 6 H 5 PCl 2.This colourless viscous liquid is commonly used in the synthesis of organophosphines. ...
Methylphosphonyl difluoride (DF), also known as EA-1251 [2] or difluoro, [3] is a chemical weapon precursor. Its chemical formula is CH 3 POF 2.It is a Schedule 1 substance under the Chemical Weapons Convention.