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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

The acute toxicity of the substance to fish was conducted in a static test using a modifier.

After 96 hours of exposure a LC50 value of 562 mg/L (geometric mean of nominal concentration) was obtained. The result is evaluated that the substance does not cause effects up to the limit of the water solubility.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
100 mg/L

Additional information

Should read >100 mg/L

The short-term toxicity study to fish was performed using the test substance diluted in an 8 : 17 mixture of 1-methoxy-2-propyl acetate (CAS: 108-65-6) and solvent naphtha 100 (CAS: 64742-95-6), respectively. The test solution consisted to 75 % of the test item and to 25 % of the 1-methoxy-2-propyl acetate/solvent naphtha mixture. As the test substance is only marketed in the above described composition, these tests can be used for the evaluation of the environmental risks of the substance. The results further display a worst case as the test substance is almost insoluble in water and will therefore not be available in large amounts (if at all) in aquatic test systems. This is also the reason for the high effect value determined in the acute toxicity test to fish (LC50(96h)= 562 mg/L) although the water solubility of the test item is <0.1 mg/L. As a conclusion this study with the test substance diluted in organic solvents can be used as a worst case describing the toxicological behaviour of the test substance against aquatic organisms.