Physical and Chemical Properties Phosphorous acid (or phosphonic acid (singular)) is the compound described by the formula H3PO3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds. Organic derivatives of phosphorous acid, compounds with the formula RPO3H2, are called phosphonic acids.
Application a.The most important use of phosphorous acid (phosphonic acid) is the production of basic lead phosphite, which is a stabilizer in PVC and related chlorinated polymers.
b.It is used in the production of basic lead phosphonate PVC stabilizer, aminomethylene phosphonic acid and hydroxyethane diphosphonic acid.
c.It is also used as a strong reducing agent and in the production of phosphorous acid, synthetic fibres, organophosphorus pesticides, and the highly efficient water treatment agent ATMP.
d.Ferrous materials, including steel, may be somewhat protected by promoting oxidation ("rust") and then converting the oxidation to a metalophosphate by using phosphoric acid and further protected by surface coating.
ABOUT US We work in this field for about 16 years, and the annual output of Phosphorous acidis about 800,000 tons.
OUR ADVANTAGE 1.Quickly and timely response 2.Quick and professional Delivery of chemicals 3.Professional technical support and after-sales service 4.Full set of Hazard Chemical Exporting Licenses 5.Continuous and stable supply chemicals with professionally deal Bulk Vessel,ISO Tank and containers transportation
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