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Registration Dossier
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EC number: 308-551-1 | CAS number: 98072-94-7 Natural ilmenite ore is concentrated by selective removal of impurities, chiefly iron, to yield a product enriched in titanium dioxide. The process consists of an optional oxidative roast followed by a reductive roasting stage, an acidic leaching stage and washing and drying the product. Alternatively the process consists of selectively chlorinating the iron oxide present in the reduced ore.
Bioaccumulation: terrestrial
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
No reliable results are available for the bioaccumulation of synthetic rutile in terrestrial organisms. Therefore, read-across is proposed to available monitoring data for elemental Ti-concentration in plants and corresponding soil or sediment samples. Reliable BSAF factors for plants vary between 0.0002 to 0.0008 kg/kg and point to the absence of bioaccumulation of Ti in plants. These results reflect equilibrium conditions for Ti in the environment, regardless of the speciation of Ti.
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