Lead-Antimony Litharge

The elements lead and antimony are applied in flame retardants on circuit boards and are used in the fireworks, paint, catalyst, and battery industries.

Lead-antimony litharge – like lead-bismuth alloy – is used as starting material that is refined into its individual elements. The lead recovered in this process is used first and foremost in the battery industry. Antimony, a silvery, shiny, brittle semimetal, is used primarily to produce antimony trioxide, a flame retardant. Furthermore, antimony is a component of circuit boards in the electrical industry. Additional applications for antimony compounds include the paint, fireworks, and catalyst industries.

Both lead-bismuth alloy and lead-antimony litharge from Aurubis fulfill the REACH requirements.

Specifications of lead-antimony litharge
Pb	ca. 55 % (range: 55-70 %)
Sb	ca. 27 % (range: 20-40 %)
Ag	ca. 500-750 gto
Au	ca. 10 gto
Cu	< 0,5 %
As	< 1,0 %
Sn	< 1,0 %
Bi	< 0,05 %
Fe	< 0,5 %
Te	< 0,1 %
Se	< 0,1 %
Cd	< 0,05 %
Zn	< 1,0 %
Moisture	< 1,0 %
Avg. material size > 10 cm	ca. 50 % of total material
Material size 1-10 cm	ca. 40 % of total material
Material size < 1 cm	ca. 10 % of total material