Registration Dossier
Registration Dossier
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EC number: 416-140-4 | CAS number: 145650-60-8 IRGAFOS 38
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acutely not harmful to algae, no toxic effects occur in the range of water solubility.
Key value for chemical safety assessment
Additional information
A GLP guideline study according to OECD 201 using a solvent was conducted. The NOEC (biomass) of the test substance in Desmodesmus subspicatus was found to be 46.9 mg/L based on the highest measured test concentration (CIBA-GEIGY 928220, 1992). Under REACH, the growth rate instead of the biomass is considered to be the relevant endpoint. The result based on biomass is considered to be valid anyway because it is usually the more sensitive endpoint and the ErC50 value is therfore not expected to fall below the low water solubility of the test item 0.000021 g/L, CIBA-GEIGY 22845, 1993).
Hence, the test substance is considered to be with high probability not harmful to aquatic algae.
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