Registration Dossier
Registration Dossier
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EC number: 215-233-5 | CAS number: 1314-36-9
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
No data is available on yttrium oxide but this substance is very closed to yttrium Oxide Europium doped (less than 10 % of europium) regarding the physico-chemical properties. These high similarities between the two substances justify a read across approach.
In an OECD guideline study, yttrium oxide, europium doped did not show toxicity to micro-organisms up to 1000 mg/L.
Key value for chemical safety assessment
Additional information
One GLP-compliant study is available on yttrium oxide, europium doped. It is quoted as reliability 1 according to Klimisch criteria, flagged as a key study and it reveals that the substance is not toxic to microorganisms at or below 1000 mg/L.
By comparison and according to the read across strategy proposed above, the yttrium oxide is not expected to present toxicity to microorganisms
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