Registration Dossier
Registration Dossier
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EC number: 701-027-7 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The 72-h ErC50 is 780 mg/l and the 72-h NOEC is 77 mg/l in Pseudokirchneriella subcapitata.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 780 mg/L
- EC10 or NOEC for freshwater algae:
- 77 mg/L
Additional information
Several studies with algae are available; all are conducted according to accepted guidelines. One study was considered invalid as test concentrations could not be maintained and the cell concentration in the controls in all replicates was smaller after 72 hours than after 48 hours (Springborn Laboratories Inc., 1995). From the other studies the most critical study is chosen as the key study. The lowest 72-h ErC50 value is 780 mg/l and the 72-h NOEC is 77 mg/l (SafePharm Laboratories, 2003a). These values are used in the assessment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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