White lead
Chemical compound / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about White lead?
Summarize this article for a 10 year old
White lead is the basic lead carbonate 2PbCO3·Pb(OH)2.[1] 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,[1] a hydrate of cerussite.[2] 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.[3]
Names | |
---|---|
Other names
Basic lead carbonate | |
Identifiers | |
3D model (JSmol) |
|
ChemSpider | |
ECHA InfoCard | 100.013.901 |
EC Number |
|
PubChem CID |
|
UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
Properties | |
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: | |
H302, H332, H360, H373, H410 | |
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).
|
White lead compounds known as lead soap were also used as additive for lubricants for bearings and in machine shops.[4] Lead soap was also used as an oil drying agent for paints made with drying oil or air drying paints made with alkyd resins. Lead is often used with cobalt driers. Lead free substitutes have been developed to replace this use of lead in paint.