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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Under the conditions of the present test CYASORB® UV-2908 Light Stabilizer induced no mortality or clinical effects in carp.
The 96 h LC50 was beyond the range tested, i.e. exceeded the concentration of 0.00045 mg/l (corresponds to half of the LOD).

Due to the very low solubility of CYASORB® UV-2908 Light Stabilizer in water, concentration levels that might be toxic to carp could not be reached.

Key value for chemical safety assessment

Additional information

In the present study the toxicity of CYASORB® UV-2908 to fish was assessed according to OECD guideline No. 203 and GLP principles. Nominal exposure concentrations were the following:

Range-finding test: 0.1, 1.0, 10 and 100% of the filtrate prepared at 100 mg/l.

Limit test: 100% of the filtrate prepared at 100 mg/l.

The 96 h LC50 was >0.00045 mg/l (corresponds to half of the LOD). Due to the very low solubility of CYASORB® UV-2908 Light Stabilizer in water (<10 µg/l), concentration levels that might be toxic to carp could not be reached.

All criteria for acceptability of the test were met according to OECD guideline No. 203.