Registration Dossier
Registration Dossier
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EC number: 233-135-0 | CAS number: 10043-01-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The reliable aquatic algae and cyanobacteria study for Euglena gracilis, which are reported by Olaveson, M.M., and C. Nalewajko 2000,, after 120-hours exposure to aluminium sulphate was 602.17 mg/l (NOEC). One of the 5d-EC50 was 3010.832 mg/l.
This information will be take into account for algae and cyanobacteria toxicity for the derivation of PNEC.
The available data for saltwater aquatic algae and cyanobacteria are limited and to obtaine the value for PNECs for saltwaters is taken account a assesment factor 10 to extrapolate to LC50 following the “Guidance on Information Requirement and Chemical Safety Assessment R.10: Characterisation of dose [concentration]- response for environment”and “Table R.10-5 Assessment factors proposed for deriving PNEC water for saltwater for different data sets”, to account for the possibility that greater taxonomic diversity in the marine environment makes it likely that some marine taxa may be more sensitive than the most sensitive freshwater taxa.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 3 011 mg/L
- EC50 for marine water algae:
- 302 mg/L
- EC10 or NOEC for freshwater algae:
- 602 mg/L
- EC10 or NOEC for marine water algae:
- 30 mg/L
Additional information
Under the conditions of the study of Olaveson, M.M., and C. Nalewajko 2000, aluminium sulphate induced no population growth effects in Euglena gracilis below 602.17 mg/l (NOEC). One of the 5d-EC50 was 3010.832 mg/l.
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