Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

The pigment zinc iron chromite brown spinelis environmentally and biologically inert due to the characteristics of the synthetic process (calcination at high temperatures, approximately 1000°C), rendering the substance to be of a unique, stable crystalline structure in which all atoms are tightly bound and not prone to dissolution in environmental and physiological media.Based on the resulting physico-chemical properties, especially the high insolubility of the pigment under environmental conditions, demonstrated by (Knopf, 2013, 2015) via transformation/dissolution testing (28 days, 1 mg loading), the substance can be expected to not have a potential to cross or adsorb to biological membranes. Therefore, no reversible or irreversible adverse toxicological effects on aquatic or terrestrial life-forms are expected, and a PNEC derivation is scientifically not justifiable.

Conclusion on classification

Based on the high insolubility of the pigment under environmental conditions, demonstrated by (Knopf, 2013, 2015) via transformation/dissolution testing (28 days, 1 mg loading), no reversible or irreversible adverse toxicological effects on aquatic or terrestrial organisms are expected. Hence no environmental classification is required.