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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

IC50 = 46 mg/l (active ingredient)

Key value for chemical safety assessment

EC50 for freshwater algae:
46 mg/L

Additional information

Castor oil, sulphated, sodium salt, 75 %, was slowly dissolved into water without breacking the unstable equilibrium that brings it into the water phase and a test on algae was performed:

The IC50 for growth rate inhibition (96h-IRC50) was 62 mg/l (95% confidence interval between 23 and 170 mg/l), containing 46 mg a.i. per litre (95% confidence interval between 17 and 130 mg/l).