Lead carbonate
Lead carbonate is the chemical compound with the chemical formula. It is a white, toxic solid. It occurs naturally as the mineral cerussite.
Structure
Like all metal carbonates, lead carbonate adopts a dense, highly crosslinked structure consisting of intact and metal cation sites. As verified by X-ray crystallography, the Pb centers are seven-coordinate, being surrounded by multiple carbonate ligands. The carbonate centers are bonded bidentate to a single Pb and bridge to five other Pb sites.Production and use
Lead carbonate is manufactured by passing carbon dioxide into a cold dilute solution of lead acetate, or by shaking a suspension of a lead salt more soluble than the carbonate with ammonium carbonate at a low temperature to avoid formation of basic lead carbonate.Lead carbonate is used as a catalyst to polymerize formaldehyde to poly. It improves the bonding of chloroprene to wire.
Regulations
The supply and use of this compound is restricted in Europe.Other lead carbonates
A number of lead carbonates are known:- White lead, a basic lead carbonate,
- Shannonite,
- Plumbonacrite,
- Abellaite,
- Leadhillite,