Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Biodegradation is defined as the biologically mediated degradation or transformation of chemicals usually carried out by microorganisms. (Guidance on information requirements and chemical safety assessment - Chapter R.7b: Endpoint specific guidance)

 

According to column 2 of Annex VII (standard information requirements for substances manufactured or imported in quantities of 1 tonne or more) of Regulation (EC) No 1907/2006 the study does not need to be conducted if the substance is inorganic.

 

Production, handling and use of the substance only take place at a small number of industrial sites with low probability of any release from products.

Aluminium dross (ALUFLUX) contains aluminium and aluminium-based compounds.The main compounds are inorganic constituents that are insoluble in water .Due to their physico-chemical properties none of the constituents are systemically and biologically available and do not cross biological membranes. The small percentage of soluble, non-toxic salts (KCl and NaCl), pose no significant threat in terms of quantity. Only aluminum nitride reacts in contact with water and decomposes to ammonia and aluminium hydroxide at a very slow kinetically rate, which pose no significant threat in terms of amounts produced by the reaction.

 

Biologically mediated degradation or transformation of carried out by microorganisms is therefore unlikely to occur.

 

Since the components of Aluminium dross (ALUFLUX) are inorganic substances, a study to determine the biodegradation in water, sediment or soil is not required under Regulation (EC) No 1907/2006 (REACH).