Registration Dossier
Registration Dossier
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EC number: 484-350-3 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Two studies were performed according to ISO Guideline 10253, OECD 201 and GLP guidelines.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 48 mg/L
- EC10 or NOEC for freshwater algae:
- 15 mg/L
Additional information
A marine study was performed with Radiagreen 0980/7831. a 1:1 mixture of radiagreen RA 7831 (i.e. Radia 7838) and Radiacid 0980 (i.e. Fatty acids, C18 -unsatd., trimers, with CAS 68937 -90 -6 and EC 500 -239)
72h EC50 >1000 mg/l. This mixture is what might actually be marketed in the future, but this mixture is not the substance as registered. A freshwater study was performed with Radia 7838 and showed a 72h EC50 for growth rate reduction at > 48mg/L (which was the maximum that could be measured in the solution), a 72h EC50 for yield inhibition of 22 mg/L (95% confidence of 21 -24 mg/L), and a NOEC for growth rate reduction and yield inhibition of 15 mg/L. The tests were performed at above the water solubility of Radia 7838 (<1 mg/L) and nominal and measured levels varied significantly. The maximum measured level in the test was 48 mg/L, with the EC50 for growth rate reduction not yet being reached.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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