Registration Dossier
Registration Dossier
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EC number: 204-375-3 | CAS number: 120-18-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Acutely harmful to aquatic algae
Key value for chemical safety assessment
Additional information
The growth inhibition induced in Scenedesmus subspicatus by an exposure to the substance was tested in a study conducted according to German standard DIN 38412, part 9. At termination of the study an EC50 of 74.4 mg/l based on the algal growth rate was determined (BASF AG, 1988).
Further information is available for two salts of naphthalenesulphonic acid, 1 -NSDA sodium salt and 2 -NSA, ammonium salt, both studies revealed EC50 values above 100 mg/l..
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