Registration Dossier
Registration Dossier
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EC number: 259-105-7 | CAS number: 54326-11-3
Endpoint summary
Administrative data
Description of key information
Additional information
(Benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium is not considered to bioaccumulate. The substance has very low water solubility and is readily biodegradable therefore, in the environment the substance will convert into inorganic aluminium species plus small amounts of fatty acids and benzoic acid as a result of dissociation. The fatty acids are natural substances with a long history of safe use in foods and benzoic acid has a calculated BCF of 7.9 (Veith et al 1987) and is therefore not expected to bioaccumulate in the aquatic environment. Aluminium is expected to have a low potential for bioaccumulation, with BCF of around 36 at pH 7.2 in fresh water fish (Cleveland et al 1991).
Furthermore, the availability of aluminium in the aqueous environment is very dependent on pH. Soluble aluminium species are only readily available to aquatic species at pH < 4. At neutral pH aluminium will be in the form of essentially insoluble hydrated oxide species, which reduces their bioavailability by direct uptake from water. Also, in realistic use scenarios, the aluminium thickener will be contained in base oil, with the formulated greases specifically designed to minimise the leaching of the thickener. Therefore, during use, the concentrations of the substance which would be bioavailable are further limited.
References
Cleveland L, Buckler DR and Brumbaugh WG (1991). Residue Dynamics and Effects of Aluminium on Growth and Mortality in Brook Trout. Environmental Toxicology and Chemistry, Vol. 100, pp 243-248.
Veith GD, Defoe DL, Bergstedt BV (1979) Measuring and estimating the bioconcentration factor of chemicals in fish. J Fish Res Board Canada, Vol 36, pp1040–1048.
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