Basic lead phosphite is an

inorganic compound In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemi ...

with the proposed composition Pb₃O(OH)₂(HPO₃). The compound contains the

phosphite anion A phosphite anion or phosphite in inorganic chemistry usually refers to PO3sup>2− but includes 2PO3sup>− ( PO2(OH)sup>−). These anions are the conjugate bases of phosphorous acid (H3PO3). The corresponding salts, e.g. sodium phosphite ...

, which provides the reducing properties associated with the application of this material. It is widely used as a stabilizer for chlorine-containing polymers, especially polyvinylchloride.. Other lead phosphites are known, including normal lead phosphite, PbHPO₃, although the basic salt is especially effective.

References

Phosphites Inorganic phosphorus compounds Lead(II) compounds {{Inorganic-compound-stub