Registration Dossier
Registration Dossier
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EC number: 204-375-3 | CAS number: 120-18-3
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Acutely harmful to aquatic organisms.
Key value for chemical safety assessment
Additional information
The acute toxicity of the substance to aquatic invertebrates was tested by a static test conducted according to DIN 38412 L 11. After 48 hours exposure 50 % of Daphnia magna were immobile at a substance concentration of 34 mg/l (BASF AG, 1988). Further information is available for two salts of naphthalenesulphonic acid. Daphnia magna were exposed to 1-Naphthalenesulfonic acid, sodium salt in a guideline study following DIN 38412 L 11. After 48 hours an EC50 >500 mg/l was determined (BASF AG, 1990). In a study on the acute toxicity of 2-NSA sodium salt D. magna were exposed to the substance for 100 hours in a static test system. An EC50 of 135 mg/l was determined (Freeman, 1953)
.A further study on 2 -NSA ammonium salt determined an EC50 of >500 mg/l.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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