Disodium phenyl phosphate is a monophenyl ester of phosphoric acid. It is used as tool compound to study the efficacy of phosphatases. Hydrolysis of phenyl phosphate by milk phosphatases was used to used to indicate whether milk has been adequately pasteurized or whether it has been contaminated with raw milk after pasteurization. Phenyl phosphate was also used as a molecular fragment for fragment-based drug discovery of Src SH2.

There are no information about AMMONIUM COBALTOUS PHOSPHATE, except is mentioned, that it was toxic.

Dibasic lead phosphite is slight white, sweet and toxic ionic compound. Dibasic lead phosphite can dissolve in hydrochloric acid, and nitric acid, but not in water. Dibasic lead phosphite is antioxidant; it has the excellent performance of resistance to ultraviolet ray, cold, and ageing. Mainly used for the heat stabilizer of Polyvinyl Chloride opaque products because of good insulation, weatherablity and ultraviolet radiation absorbency.