What is trimethyl phosphite used for?

What is trimethyl phosphite used for?

Trimethyl Phosphite is a colorless liquid with a pungent odor. It is used in making pesticides, flame retardants and organophosphorous additives.

What is produced by the reaction of trimethyl phosphite with a Chloroacetoacetate?

For example, trimethyl phosphite and methyl α-chloroacetoacetate yield the insecticide phosdrin usually as a 3:2 mixture of cis- and trans-isomers (Fig. 4.39.

How do you remove triethyl phosphite from a reaction mixture?

[0048] A procedure for removal of the triethyl phosphite involves reducing the internal pressure of the vessel holding the reaction mixture and heating the vessel at a given temperature to distill off the triethyl phosphite, a low-boiling product, from the reaction system.

Is phosphite soluble in water?

Both are white solids that consist of salts of the phosphite anion H2PO3−, the conjugate base of phosphorous acid….Monopotassium phosphite.

How do I get rid of Tributylphosphine?

All Answers (5) To remove tributylphosphine and tributylphosphine oxide from the reaction mixture use polar solvents like DMF, Ethanol or DMSO.

What is the formula of phosphite?

PO3− 3Phosphite anion / Formula

How do you remove triphenyl phosphine oxide?

The simplest way I have found to get rid of PPh3O is to dissolve the reaction mixture in ethanol, add 2 equivalents of zinc chloride (2 equivalents in comparison to PPh3) and stir for a couple of hours at room temperature. This forms a PPh3O-Zn complex, insoluble in ethanol, and can be filtered off.

What is steel desulphurization?

Steel desulphurization becomes more effective with the decreasing oxygen activity. Desulphurization potential – Desulphurization potential is also a function of the slag composition.

What is triethyl phosphate?

Triethyl phosphate is a trialkyl phosphate that is the triethy ester derivative of phosphoric acid. It derives from an ethanol. Triethyl phosphate appears as a colorless, corrosive liquid.

What is the reaction rate of steel desulphurization with refining slag?

As regards steel desulphurization with a refining ladle top slag, the reaction rate is dependent on how fast sulphur is transported from the metal phase to the metal/slag interface and how fast it is transported away from the interface into the slag phase.

What is the solubility of sulfur in steel?

Sulfur in steel Desulfurization of steel by slags Desulfurization of steel by injection of active agents Sulfur in steel Sulfur (S) may dissolve in liquid iron (Fe) at any concentration. However solubility of sulfur in solid iron is limited: 0.002% in α-iron at room temperature and 0.013% in γ-iron at 1832°F (1000°C).