Registration Dossier
Registration Dossier
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EC number: 600-734-7 | CAS number: 106276-78-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The test substance is with high probability not acutely harmful to aquatic algae. No toxic effects occur within the range of solubility.
Key value for chemical safety assessment
Additional information
A GLP guideline study according OECD 201 has been conducted (BASF 2015) using Pseudokirchneriella subcapitata. Due to the low solubility of the test item the test solutions were prepared following general guidance provided in OECD 23 in order to achieve a water accommodated fraction (WAF) of the test substance. Generally, each test solution was prepared separately (differential loading) for each test group by directly adding test substance to test medium according. However, concentration control analyses are not performed, because a reliable method for analyses in the required concentration range could not be developed. Therefore, the effect concentrations are based on the loading rate used to prepare the test substance WAF solutions.
After 72 h of exposure no effects on the growth rate and yield of Pseudokirchneriella subcapitata could be observed. Hence, the EC10 and EC50 after 72 h were determined to be > 320 mg/L (loading rate) for yield and growth rate.
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