Registration Dossier
Registration Dossier
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EC number: 273-708-2 | CAS number: 69011-71-8 A scum formed on the surface of molten aluminum and molten aluminum alloys.
Endpoint summary
Administrative data
Description of key information
Additional information
Aluminium dross is unlikely to have direct toxic effects on aquatic organisms. Its main constituents [metallic aluminium, aluminium oxide and aluminium hydroxide (the breakdown product of aluminium nitride)] are highly insoluble in water(< 1 mg/L) (see also Krewski et al, 2007) making bioavailability and crossing of biological membranes unlikely in aquatic environments. The other breakdown product of aluminium nitride is ammonia which is a highly toxic substance for aquatic environments in high concentrations. Nevertheless, the rate of ammonia production is very low (Endpoint 4.13: Final report, ALUFLUX or Aluminium dross or gray Aluminium dross Batch No.: Production of year 2009 - FLAMMABILITY, A12., Smeykal, H., 2010). The total amount of produced ammonia in the unit of the examined substance is also low, provided that aluminium dross is directed in a substantial water body.The impurities of aluminium dross are either of insignificant toxicological profile or of concentrations insufficient to trigger relevant classification for the whole mixture.
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