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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.01 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.1 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.001 mg/L
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
80 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (marine water)

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

It is assumed that soluble Zinc concentration from Tin Titanium Zinc oxide is responsibel for the effect to algae. No effects up to the limit dose were observed to Daphnia and fish.

Due to the fact that the substance is poorly soluble, an eluate according to OECD 29 was tested in the acute aquatic ecotoxicity tests. However, to avoid further animal testing, the chronic effects were investigated by evaluation of the transformation and dissolution of Ti, Zn and Sn from the substance according to the T/D Protocol (OECD 29) (transformation/dissolution protocol, see section 4.8 attached). Then, the transformed metal concentrations from the OECD 29 test were compared with the chronic Ecotoxicity Reference Values (ERVs). The full chronic test was performed at 1 mg/L loadings for 28 days and at the pH of maximum release of the most eco-toxicological relevant metal, i.e. Zn and Sn at pH 5.5. This is one of the results of the available acute aquatic ecotoxicity tests.

The chronic Ecotoxicity Reference Values (ERVs) for Zn and Sn was taken from the REACH dossier of Zn oxide (CAS 1314-13-2) and SnCl2(7772-99-8). A chronic ERV of 82 µg/L for pH 6-<7 was determined for Zn. The chronic ERV for Sn is 30 µg/L which is the lowest chronic endpoint determined in a chronic study with Algae. The third metal Ti is of no ecological relevance and is thus not considered further. 

The maximum Zn concentration was 16.138 µg/L after 336 hours and was 14.032 µg/L after 672 hours and at a loading rate of 1 mg/L. These concentrations are far below the chronic ERV of 82 µg/L for pH 6-<7 and thus no chronic classification has to be applied to the substance according to GHS.

For Sn, the maximum concentration was 0.724 µg/L after 96 hours and was 0.331 µg/L after 672 hours and at a loading rate of 1 mg/L. These concentrations are far below the chronic ERV of 30 µg/L and thus no chronic classification has to be applied to the substance according to GHS.

Furthermore, Zinc is considered as equivalent to being ‘rapidly degradable” in the context of classification for chronic aquatic effects (> 70 % removal within 28 days from the water column). Furthermore, bioaccumulation of the essential Zinc is not relevant since it is actively regulated by organisms (see ECHA disseminates Dosssier; CAS No. 1314 -13 -2).

In conclusion, the results according to the T/D Protocol compared with the ERVs for the most ecotoxicological relevant metals of the substance shows that the substance has not to be classified according to GHS.