Registration Dossier
Registration Dossier
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EC number: 201-317-9 | CAS number: 81-04-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
According to the OECD Guideline for Testing of Chemicals No. 201, no toxic effects against algae were observed at a limit test concentration of 100 mg/L (active ingredient) under exposure conditions. Based on growth rate for naphthalene-1,5-disulfonic acid an 72h-EC50 of > 100 mg/L and a72 h-NOEC of >= 100 mg/L was observed.
The results are expressed in terms of nominal concentrations. Effective concentrations ranged from 99.9 % to 100.8 % of nominal values of the active ingredient at 0 hours, and from 98.4 % to 101.3 % of nominal values of the active ingredient at 72 hours.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 100 mg/L
- EC10 or NOEC for freshwater algae:
- 100 mg/L
Additional information
The given results were:
72h-EC50 >100 mg/L
72h-EC10 >100 mg/L
72h-NOEC >= 100 mg/L
72h-LOEC > 100mg/L
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