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EC number: 701-413-5
CAS number: -
The results of a key study with Zirconium zircon with encapsulated cadmium selenium sulphide indicate a low potential for acute toxicity to freshwater invertebrates. The respective 48 h EC50 of Zirconium zircon with encapsulated cadmium selenium sulphide on mobility of freshwater invertebrates (Daphnia magna), obtained in a test according to OECD 202, is estimated to be 6840 mg/L (based on dissolved fractions after 24 hours of stirring of 5 different loadings ranging from 1,000 - 10,000 mg/L, respectively) (Weyand, 2000). Nevertheless, read-across to the assessment entity soluble cadmium substances is applied since cadmium cations determine fate and toxicity in the environment.
One reliable study (Klimisch 2) is available for the acute toxicity of the test item onDaphia magna. The value for mortality and immobilisation was determined to be 6840 mg pigment/L (based on dissolved fractions after 24 hours of stirring of 5 different loadings ranging from 1,000 - 10,000 mg/L, respectively).
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