Diethyl phosphite, is an organic compound, chemical formula C4H11PO3, colorless liquid, mainly used as extractant, phosphate ester intermediate, used for the preparation of diethyl phosphate, rice pyrite, etc.

Storage method
Diethyl phosphite is flammable and irritating. Subjected to high thermal decomposition, contact with acid releases toxic gases. It should be sealed and stored in a cool and ventilated place. Pay attention to fire and heat protection.

Use
Mainly used as extraction agent, intermediate of phosphate ester, used for the preparation of diethyl phosphate, oryzol, etc.