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EC number: 263-372-5
CAS number: 62010-10-0
This endpoint was covered by a weight of evidence approach including two read across studies, one for zirconium dioxide, and one for zirconium basic carbonate. These read across substances are both insoluble in water, as is zirconium basic sulfate. Both studies show that at (nominal) test substance concentrations of 100 mg/L, no adverse effects occur in aquatic invertebrates. Based on the results of these studies, zirconium basic sulfate is not expected to adversely affect aquatic invertebrates either at similar concentrations.
Two reliable read across studies were identified, one for zirconium
dioxide, and one for zirconium basic carbonate. Both substances are
insoluble in water, as is zirconium basic sulfate.
In the study of Goodband and Mullee (2010), conducted according to OECD
guideline 202, a saturated solution of zirconium basic carbonate
(nominal loading rate 100 mg/L) did not induce any immobilisation of
Daphnia magna after 48 hours of exposure. Dissolved zirconium
concentrations in the test solutions were < LOQ. Therefore the 48-h EC50
is > 100 mg/L.
The results of these studies can be used as an indication that zirconium
basic sulfate, which is also a zirconium compound which is insoluble in
water, will not adversely affect aquatic invertebrates either at similar
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