Registration Dossier

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Fish

Concerning the acute toxicity of manganese ferrite to fish one test was conducted according to the procedure proposed by the German Federal Environmental Agency for lethal effect on zebrafish from 1984. The test was carried out with manganese ferrite ((Fe,Mn)2O3). No effect was observed at the highest nominal concentration of 10000 mg/L.

Daphnia

Concerning the acute toxicity of manganese ferrite to the invertebrate Daphnia magna a test was conducted according to EU Method C.2. Manganese ferrite had no effect (EC0) at a concentration of 10000 mg/L on the invertebrate Daphnia magna.

The value is related to nominal concentrations, since no analytical monitoring was performed.

Algae

In accordance with column 2 of REACH Annex VII, studies on toxicity to algae do not need to be conducted, as the category members are inert inorganic oxides of iron, manganese and zinc and highly insoluble in water. Soluble salts of these metals are already present in algal growth and test media as essential nutrients at concentrations exceeding the solubility of iron in the iron oxides.

Therefore a waiver is provided to cover the endpoint of toxicity to aquatic algae.

Microorganisms

The 3-hour EC50 of manganese ferrite was >/= 10000 mg/L on activated sludge, related to respiration rate. The method used was the OECD Guideline 209.

The effect value is related to nominal concentrations, since no analytical monitoring was performed.

Additionally, concerning aquatic toxicity several studies conducted with soluble iron and manganese substances as well as manganese dioxide as test substances are available. The test substances used have a completely different water solubility behaviour compared to the members of the ”Iron Oxides Category”. Therefore all studies are scored to be not reliable to cover aquatic toxicity endpoints for the category members and are not taken into account for assessment.

Categories Display