Registration Dossier
Registration Dossier
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EC number: 924-168-8 | CAS number: 92128-66-0
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
EL50 (72 h) = 30 mg/L growth rate (Raphidocelis)
EL50 (72 h) = 10 mg/L biomass (Raphidocelis)
NOELR (72 h) = 3 mg/L growth rate (Raphidocelis)
NOELR (72 h) < 1 mg/L biomass (Raphidocelis)
Key value for chemical safety assessment
Additional information
No studies are available on the toxicity to aquatic algae for hydrocarbons, C6-C7, n-alkanes, isoalkanes, cyclics, > 5% n-hexane. Based on a category approach data are read-across to hydrocarbons, C6-C7, n-alkanes, isoalkanes, cyclics, < 5% n-hexane. Two studies conducted according to OECD 201 guideline are available on the toxicity to aquatic algae for hydrocarbons, C6-C7, n-alkanes, isoalkanes, cyclics, < 5% n-hexane (Shell 1994, 1995). The toxicity, as measured by growth rate and biomass to Raphidocelis, was evaluated in freshwater by using water accomodated fractions (WAFs). Under the conditions of these studies, the test substance, hydrocarbons, C6-C7, n-alkanes, isoalkanes, cyclics, < 5% n-hexane, produced toxicity to Raphidocelis at 30-100 mg/L (Shell 1995) and 55 mg/L (Shell 1994) measured as growth rate and 10-30 mg/L (Shell 1995) and 26 mg/L (Shell 1994) measured as inhibition to biomass based on nominal loadings of the test substance in water. NOELRs were determined to be 3 mg/L (growth and biomass) (Shell 1995) and 30 mg/L (growth) and < 1 mg/L (biomass) (Shell 1994).
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