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

Sustainability

Transparency through product data

Metals are essential to the modern world, and transparency is key to reducing their environmental impact. For five years, Aurubis has published independently verified Environmental Footprint Declarations (EFDs), based on Life Cycle Assessment methodology and verified by TÜV NORD. In 2026, we now cover 14 product groups, pioneering transparency in our industry. Where comparable benchmarks exist, our products perform better. Where they don't, we are setting new standards for transparency. Because reliable data enables better decisions, measurable progress and more sustainable value chains. Our contribution to a net-zero future.