Registration Dossier
Registration Dossier
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EC number: 269-057-9 | CAS number: 68186-95-8 An inorganic pigment that is the reaction product of high temperature calcination in which zirconium (IV) oxide, silicon oxide, and vanadium (IV) oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of zircon. Its composition may include any one or a combination of the modifiers alkali or alkaline earth halides.
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
As dissolved V and Zr concentrations were below 33 µg/L respectively, even at the highest loading of 100 mg/L, the pigment can be considered environmentally inert.
Key value for chemical safety assessment
Additional information
The water solubility of zirconium vanadium blue zircon was measured according to the method OECD test series No. 29 (Guidance document on transformation/dissolution of metals and metal compounds in aqueous media). The transformation/dissolution ofthe pigmentresulted in the following dissolved concentrations:
Full test 7 days at 100 mg/L and pH 6: 22.02 ± 1.98 µg V/L and < 0.5 µg Zr/L
Full test 7 days at 100 mg/L and pH 8: 32.46 ± 1.05 µg V/L and 1.64 ± 0.21 µg Zr/L
Full test 28 days at 1 mg/L and pH 8: <0.5 µg V and Zr/L
As dissolved V and Zr concentrations were below 33 µg/L respectively, even at the highest loading of 100 mg/L, the pigment can be considered environmentally inert.
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