Registration Dossier
Registration Dossier
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EC number: 303-385-6 | CAS number: 94166-87-7
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The toxicity of aluminum, benzoate C16-18-fatty acids complexes to algal growth showed no effects at a water accommodated fraction nominal loading rate of 100 mg/L. Therefore, the 72 hour ErL50 is determined to be > 100 mg/L (WAF) and the 72 hour NOErLR is 100 mg/L (WAF).
Key value for chemical safety assessment
Additional information
The toxicity to algal growth was determined in GLP-compliant, static, freshwater test (Harlan 2013) following OECD guideline 201. As no effects were observed in the preliminary range finding test, the definitive toxicity to algal growth was conducted as a limit test at a nominal loading rate of 100 mg/L alongside a blank control. Algae (Pseudokirchneriella subcapitata) were exposed to water accommodated fraction (WAF) of aluminum, benzoate C16-18-fatty acids for 72 hours in standard ecotoxicity media adjusted to a hardness of approximately 150 mg/L CaCO3. Observations of algal biomass were made at 24, 48 and 72 hours and the test solutions analysed for aluminium content and total organic carbon at test initiation and termination. As no inhibition to algal growth was observed, the 72 hour ErL50 is determined to be > 100 mg/L (WAF) and the 72 hour NOErLR is 100 mg/L (WAF).
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