Dimethyl phosphite can be directly used in the synthesis of organophosphate insecticides such as dichlorvos and herbicides such as glyphosate in pesticides. In addition, it is also an important organic synthesis raw material used in the production of organic phosphate type corrosion inhibitors, plastic additives, dye additives, and textile flame retardants. Used as lubricant additives, adhesives, and certain organic synthesis intermediates.