Registration Dossier
Registration Dossier
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EC number: 701-227-4 | CAS number: -
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
For assessing the aquatic hazard of CdZnS, reference has been made to ecotoxicity data obtained by standard testing on CdTe, a sparingly soluble Cd-compound. Transformation dissolution data demonstrate that the solubility of Cd in CdZnS is even much lower than the solubility of Cd from CdTe (>16-50 times lower solubility of Cd in CdZnS, as compared to solubility in CdTe). The ecotoxicity of CdTe was therefore used as a worst case for the ecotoxicity of CdZnS.
Only one test was available with Daphnia magna as test organism and CdTe as toxicant. The NOEC was 0.2 mg CdTe/L. No marine data was available.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.2 mg/L
Additional information
The water soluble fraction of CdTe after DA was toxic to Daphnia. NOEC and LOEC for reproduction and mortality was 0.2 and 0.29 mg CdTe/L respectively. This is also the EC50 range for effects on reproduction.
As Cd2+ ion determines ecotoxicity, the PNEC deriviation will be based on the Cd 2+ ion as determined in the RA (2008).
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