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EC number: 925-894-8 | CAS number: 1174522-20-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Growth of alga cultures, as measured by biomass, exposed to water accommodated fractions (WAFs) of hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics, prepared at 1000 mg/L was inhibited by 50% after 72 hours. Therefore, the 72-hr ELb50 value is reported as 1000 mg/L. In comparison, growth of alga cultures, as measured by growth rate, were not inhibited by more than 50% by the 1000 mg/L WAF after 72 hours. Therefore, the 72-hr ELr50 value is reported as >1000 mg/L. The 72-hr NOELR values for biomass and growth rate are 1 and <1 mg/L, respectively. These data are used as read-across data to hydrocarbons, C9-C11, cyclics, <2% aromatics.
Key value for chemical safety assessment
Additional information
Growth of alga cultures, as measured by biomass, exposed to water accommodated fractions (WAFs) of hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics, prepared at 1000 mg/L was inhibited by 50% after 72 hours. Therefore, the 72-hr ELb50 value is reported as 1000 mg/L. In comparison, growth of alga cultures, as measured by growth rate, were not inhibited by more than 50% by the 1000 mg/L WAF after 72 hours. Therefore, the 72-hr ELr50 value is reported as >1000 mg/L. The 72-hr NOELR values for biomass and growth rate are 1 and <1mg/L, respectively. These data are used as read-across data to hydrocarbons, C9-C11, cyclics, <2% aromatics.
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