Basic Lead Carbonate Product Description CAS#1319-46-6

Basic lead carbonate, also known as lead white, white lead powder, C.I. Pigment White 1 (C.I. 77597), has the chemical name dihydroxytrilead dicarbonate, with the molecular formula (PbCO₃)₂·Pb(OH)₂ (also written as Pb₃(CO₃)₂(OH)₂ or C₂H₂O₈Pb₃), and a molecular weight of 775.63. At room temperature, it is a white, heavy powder belonging to the hexagonal crystal system. Its melting point is 400°C (decomposes), and its density is 6.14 g/cm³. Regarding solubility, basic lead carbonate is insoluble in water and ethanol, slightly soluble in aqueous solutions of carbon dioxide, and soluble in acetic acid, nitric acid, and sodium hydroxide solutions. Industrially, basic lead carbonate is mainly synthesized through chemical precipitation, using lead nitrate and sodium bicarbonate as raw materials via a precipitation reaction. Alternatively, it can be prepared by reacting lead acetate and lead oxide with carbon dioxide, followed by precipitation, crystallization, washing, and drying. Basic lead carbonate is one of the earliest artificially synthesized white pigments in human history and has been used as a white pigment and in cosmetics since ancient times. Its strong film, excellent weather resistance, and rust prevention properties make it valuable in coatings, ceramics, plastics, cosmetics, and batteries.

Applications of Basic Lead Carbonate (CAS#1319-46-6)

Basic lead carbonate is an important inorganic white pigment and multifunctional chemical raw material, widely used in coatings, plastics, ceramics, glass, batteries, and cosmetics industries.

In the coatings and paints industry, basic lead carbonate is an important white pigment for producing varnishes, rust-preventive paints, and outdoor paints. Due to its excellent hiding power, durability, and weather resistance, basic lead carbonate is widely used as a pigment and preservative in industrial coatings. The recommended addition level in amino or acrylic baking varnishes is 2%–8%, and it can be used for coating automobiles, motorcycles, bicycles, furniture, etc. Coatings produced with lead white have a strong film with excellent weather resistance and rust prevention, and it is still used in the coatings industry as a white pigment for producing varnishes, rust-preventive paints, and outdoor paints.

In the plastics industry, basic lead carbonate is used as a heat stabilizer and light stabilizer for polyvinyl chloride (PVC). It improves the UV resistance of plastics, extends their service life, and improves processing performance. It is used in rigid PVC applications such as pipes, conduits, and cable insulation materials.