What is h3po3?

H3PO3 is the chemical formula for phosphorous acid. This is a diprotic acid, which means it has two hydrogen atoms to donate to a base in a reaction. Phosphorous acid has a molecular weight of 82.0 g/mol and melting point of 73.6 °C. It is a white solid that is soluble in water and commonly used in the chemical industry as a reducing agent. Phosphorous acid can also be found in fertilizers, and it is produced by reacting elemental red phosphorus with aqueous hydrochloric acid. Some of its applications include the production of flame retardants, plasticizers, and herbicides. It is important to handle this chemical with care as it can cause skin irritation and eye damage.