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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Growth rate
NOEC (0-72h): 0.3 mg/L
EC10 (0-72h): 71.3 mg/L (57.2 - 89.2)
EC20 (0-72h): > 100 mg/L
EC50 (0-72h): > 100 mg/L
Yield
NOEC (0-72h): 0.3 mg/L
EC10 (0-72h): 0.7 mg/L (0.5 - 1.1)
EC20 (0-72h):3 mg/L (N/A - 39.8)
EC50 (0-72h): 85.1 mg/L (69.3 - 101.3)

Key value for chemical safety assessment

EC50 for freshwater algae:
85.1 mg/L
EC10 or NOEC for freshwater algae:
0.3 mg/L

Additional information

The toxicity of test item Paraffin waxes and Hydrocarbon waxes (C14-17), chloro, sulfochlorinated, low sulphonated, saponified was tested on Pseudokirchneriella subcapitata. The 72-hour EC10, EC20 and EC50 (with their 95% confidence Iimits) and the NOEC, calculated in terms of the nominal concentrations of test item, for the two end-points, are reported in the following: Growth rate NOEC (0-72h): 0.3 mg/L EC10 (0-72h): 71.3 mg/L (57.2 - 89.2) EC20 (0-72h): > 100 mg/L EC50 (0-72h): > 100 mg/L Yield NOEC (0-72h): 0.3 mg/L EC10 (0-72h): 0.7 mg/L (0.5 - 1.1) EC20 (0-72h):3 mg/L (N/A - 39.8) EC50 (0-72h): 85.1 mg/L (69.3 - 101.3)