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Diss Factsheets

Ecotoxicological information

Toxicity to terrestrial arthropods

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Administrative data

Link to relevant study record(s)

Description of key information

For assessing the aquatic hazard of CdSSe, 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 CdSSe is even much lower than the solubility of Cd from CdTe (>100 times lower solubility of Cd in CdSSe, as compared to solubility in CdTe). The ecotoxicity of CdTe was therefore used as a worst case for the ecotoxicity of CdSSe. 
An ecotoxicity study was performed using Folsomia candida as test species. No effects were seen up to a concentration of 10 mg CdTe/kg DW.
As Cd2+ ion determines ecotoxicity, the PNEC deriviation will be based on the Cd 2+ ion as determined in the RA (2008).

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil dwelling arthropods:
1 000 mg/kg soil dw
Long-term EC10, LC10 or NOEC for soil dwelling arthropods:
10 mg/kg soil dw

Additional information

Under the conditions of the study CdTe had no effect on reproduction of adult springtails (Folsomia candida) at 10 mg/kg dw (NOEC). The NOEC for mortality was 1000 mg/kg dw. The LC50 for mortality of adult springtails was beyond the range tested, i.e. exceeded 1000 mg/kg dw. The EC10 for reproduction was 11 mg/kg dw with a 95% CI between 0.63 -205 mg/kg dw. The EC50 for reproduction was beyond the range tested, ie exceeded 1000 mg/kg dw.