Registration Dossier
Registration Dossier
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EC number: 215-168-2 | CAS number: 1309-37-1
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
- Endpoint:
- fish early-life stage toxicity
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Reference
Description of key information
Applying read-across to nano-sized iron (hydr)oxides (see attachment "Read-across justification-environ assessment-iron oxides" in IUCLID section 13), diiron trioxide in powder and nanoform is not considered chronically toxic to fish.
Key value for chemical safety assessment
Additional information
In a supporting FELS (Fish Early Life Stage) toxicity study with alpha-Fe2O3 nanoparticles (Klimisch 3) by Zhu et al. (2012) following OECD 212, effects on the mortality and hatching rate of zebrafish (Danio rerio) embryos were not observed at the level of the OECD test limit of 10 mg/L (NOEC).
Further, acute toxicity of different iron(hydr)oxides, including micro- and nano-sized iron hydroxide oxide yellow, diiron trioxide, triiron tetraoxide, zinc ferrite brown spinel and manganese ferrite black spinel to fish (Danio rerio) was not observed up to 100 g/L, a concentration that is 1000-fold above the corresponding OECD test limit for acute toxicity.
Table: Chronic aquatic toxicity of iron (hydr)oxides to fish.
Endpoint |
Test species |
Test results |
Test material/form |
Reliability: Reference |
Long-term toxicity to fish |
Danio rerio |
NOEC (168 h): 10 mg/L nominal |
diiron trioxide / nano, alpha |
RL3: Zhu et al., 2012 |
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