Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Conclusion on classification

Based on the results from transformation /dissolution tests, demonstrating that zinc drosses are insoluble to such extent that the concentration of zinc and other metal ions in standard aqueous media loaded with 10mg/l of zinc dross is lower than the reference value for aquatic toxicity of zinc at pH 6 and pH 8.

Zinc dross is thus not classified.

Model calculations supported by experimental field evidence show that zinc is rapidly removed from the water column at a rate of > 70% in 28 days. Values for zinc dross, taking this into account, are thus below the toxicity reference values at both pH and zinc dross is not classified for aquatic chronic toxicity.