Registration Dossier
Registration Dossier
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EC number: 270-307-4 | CAS number: 68424-50-0
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
EC 50 gr = 140 mg/l
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 140 mg/L
- EC10 or NOEC for freshwater algae:
- 10 mg/L
Additional information
This highly insoluble substance makes aquatic toxicity testing impractical. A data waiver is specified. Read across from two similar substances (EC 307-037-4 and EC 281-975-1) using a WAF method estimate a 72hr EL50 (Effective Loading rate) to Desmodesmus subspicatus of 37 mg/L, based on nominal loading rates was 140 mg/L for growth rate and 37 mg/L for yield (WAF testing approach taken). This result indicates a substance with low aquatic toxicity.
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