Registration Dossier
Registration Dossier
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EC number: 273-791-5 | CAS number: 69029-45-4 A scum or slag formed on the surface of molten lead during the process of removing antimony along with arsenic by oxidation with air. It consists of antimony, arsenic and lead oxides.
Endpoint summary
Administrative data
Description of key information
Additional information
Substance: Lead dross antimony rich
“Lead, dross, antimony rich is formed when oxidation with air and/or oxygen is used to remove antimony, and possibly tin and arsenic, during the pyrometallurgical refining of both primary and secondary lead bullion. Lead dross, antimony rich consists of variable amounts of lead, antimony and other metals in either alloy form or as compounds such as oxides.” |
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EC number/ EINECS No. |
CAS No. |
273-791-5 |
69029-45-4 |
Lead dross antimony rich is an odourless solid (at 20°C and 101.3 kPA) in the form of fracture, powder or coarse lumps. The colour in which it appears is variable, typically yellow to light (metallic) grey/black. The density will vary according to the precise composition of the sample. The density of the tested sample was 8.04 g/cm3. The melting point is shown to be 316°C. Consequently, boiling point and vapour pressure cannot be determined. The water solubility test shows dissolution of metal ions. Three samples were tested for granulometry, a D50 = 105 micrometer, 526 micrometer and 1316 micrometer were determined. Both the results of the water solubility test and the granulometry test should be used with caution.
There is no evidence of physical hazards in terms of (auto)flammability, explosivity and oxidizing properties.
Studies regarding flash point, partition coefficient and surface tension do not need to be conducted.
Waivers are in place for all these endpoints.
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