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Methylphosphonyl dichloride is produced by oxidation of methyldichlorophosphine, with sulfuryl chloride: [3] CH 3 PCl 2 + SO 2 Cl 2 → CH 3 P(O)Cl 2 + SOCl 2. It can also be produced from a range of methylphosphonates (e.g. dimethyl methylphosphonate) via chlorination with thionyl chloride. Various amines catalyse this process. [4]
116.91 g·mol −1 Appearance ... (methyl)phosphane, SW and methylphosphonous dichloride) is an organophosphorus compound with the chemical formula CH 3 PCl 2. It is ...
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.
It, along with methylphosphonyl difluoride (DF), was developed during the 1980s in order to replace an aging stockpile of unitary chemical weapons. [3] QL is listed as a Schedule 1 chemical by the Chemical Weapons Convention .
CH 3 PO(OC 2 H 5) 2 + 2 Me 3 SiCl → CH 3 PO(OSiMe 3) 2 + 2 C 2 H 5 Cl CH 3 PO(OSiMe 3 ) 2 + 2H 2 O → CH 3 PO(OH) 2 + 2 HOSiMe 3 The reaction pathway proceeds via the siloxyphosphonate intermediate due to the difficulty in directly hydrolysing dialkylphosphonates.
Consumers with the product described above can contact Quaker Consumer Relations at 1-800-407-2247 (9 a.m.– 4:30 p.m. CST, Monday–Friday) with any questions about the recall. You Might Also Like
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 .
87 °C (189 °F; 360 K) [1] at 4 mmHg Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references