Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
20.6 µg/L
Assessment factor:
1
Extrapolation method:
sensitivity distribution

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
6.09 µg/L
Assessment factor:
1
Extrapolation method:
sensitivity distribution

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
100 µg/L
Assessment factor:
1
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
117.8 mg/kg sediment dw
Assessment factor:
1
Extrapolation method:
sensitivity distribution

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
56.5 mg/kg sediment dw
Assessment factor:
1
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
35.6 mg/kg soil dw
Assessment factor:
1
Extrapolation method:
sensitivity distribution

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

A basic assumption made in this hazard assessment (in accordance to the same assumption made in the EU RA process) is that the ecotoxicity of zinc and zinc compounds is due to the Zn2+ ion. As a consequence, all aquatic, sediment and terrestrial toxicity data in this report are expressed as “zinc”, not as the test compound as such, because ionic zinc is considered to be the causative factor for toxicity. A further consequence of this is that all ecotoxicity data obtained on different zinc compounds, are mutually relevant for each other. For that reason, the available ecotoxicity databases related to zinc and the different zinc compounds are combined before calculating the PNECs. The only way zinc compounds can differ in this respect is in their capacity to release zinc ions into (environmental) solution.

Hydrogen peroxide is released only slowly as demonstrated in the transformation dissolution test

Conclusion on classification

According to Annex IV: Metals and inorganic metal compounds of the Guidance on the Application of the CLP Criteria (Version 5.0, July 2017) the results of the transformation/dissolution test were compared to the acute and chronic aquatic ecotoxicity values.

Based on these results, Zinc peroxide is classified as Aquatic Acute 1 (H400) and Aquatic Chronic 1 (H410) in accordance with (EC) No 1272/2008.

 

The M-Factor for the acute aquatic effect of Zinc peroxide is 1, referring to a) the acute aquatic ecotoxicity values of 68 µg Zn/L, and b) the molecular weight ratio of Zinc peroxide versus the Zn2+ ion resulting in an acute aquatic ecotoxicity value of 101.4 µg/L for Zinc peroxide.

 

The M-Factor for the chronic aquatic effect of Zinc peroxide is 1, referring to a the lowest chronic aquatic ecotoxicity value observed for the algae Pseudokircherniella subcapitata (19 µg Zn/L) at neutral pH, and b) the molecular weight ratio of Zinc peroxide versus the Zn2+ ion resulting in a chronic ecotoxicity reference value of 28.23 µg/L for Zinc peroxide.