White lead

White lead
Names
	Other names Basic lead carbonate
Identifiers
CAS Number	1319-46-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	14148;
ECHA InfoCard	100.013.901
EC Number	215-290-6;
PubChem CID	14834;
UNII	WDF96425HV ;
CompTox Dashboard (EPA)	DTXSID9029641 ;
	InChI InChI=1S/2CH2O3.2H2O.3Pb/c22-1(3)4;;;;;/h2(H2,2,3,4);21H2;;;/q;;;;3+2/p-6 Key: RYZCLUQMCYZBJQ-UHFFFAOYSA-H;
	SMILES C(=O)([O-])[O-].C(=O)([O-])[O-].[OH-].[OH-].[Pb+2].[Pb+2].[Pb+2];
Properties
Chemical formula	2PbCO3·Pb(OH)2
Molar mass	775.633 g/mol
Appearance	White powder
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Lead poisoning
	GHS labelling:
Pictograms
Hazard statements	H302, H332, H360, H373, H410
Precautionary statements	P201, P202, P260, P261, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

White lead is the basic lead carbonate 2PbCO₃·Pb(OH)₂. It is a complex salt, containing both carbonate and hydroxide ions. White lead occurs naturally as a mineral, in which context it is known as hydrocerussite, a hydrate of cerussite. It was formerly used as an ingredient for lead paint and a cosmetic called Venetian ceruse, because of its opacity and the satiny smooth mixture it made with dryable oils. However, it tended to cause lead poisoning, and its use has been banned in most countries.

Basic lead carbonate is produced by treating lead acetate with carbon dioxide and air. In the laboratory procedure treats lead acetate with urea. It occurs naturally as the mineral cerussite. The compound has been characterized by X-ray crystallography, which confirms the formula. The structure is complicated, features two kinds of Pb(II) sites, those bonded to hydroxide and those bonded to carbonate and hydroxide.