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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. It is a white crystalline solid that melts slightly above room temperature. [2]
C H 3 Cl 2 P: Molar mass: 116.91 g·mol −1 ... SW and methylphosphonous dichloride) is an organophosphorus compound with the chemical formula CH 3 PCl 2. It is a ...
CH 3 Cl + P(OC 2 H 5) 3 → CH 3 PO(OC 2 H 5) 2 + C 2 H 5 Cl. The resulting dialkylphosphonate is then treated with chlorotrimethylsilane before hydrolysis of the siloxyphosphonate to generate the desired product. [3] 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
To create the solution, 11.6 g NaCl is placed in a volumetric flask, dissolved in some water, then followed by the addition of more water until the total volume reaches 100 mL. The density of water is approximately 1000 g/L and its molar mass is 18.02 g/mol (or 1/18.02 = 0.055 mol/g). Therefore, the molar concentration of water is c(H 2 O ...
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.
In chemistry, the mass concentration ρ i (or γ i) is defined as the mass of a constituent m i divided by the volume of the mixture V. [1]= For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture.
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 .
The compound exhibits the properties characteristic of a primary phosphine, i.e., a compound of the type RPH 2.It can be oxidized to methylphosphonous acid: . MePH 2 + O 2 → MeP(H)O 2 H