Registration Dossier
Registration Dossier
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EC number: 245-980-2 | CAS number: 24012-08-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
The environmental classification of Carbonic acid, ammonium zinc salt is based on effect values for Zn stated within the REACH dossier of zinc oxide, CAS 1314-13-2 (disseminated on the ECHA webpage). The lowest acute and chronic aquatic ecotoxicity values (EC50 and NOEC) were observed for the algae Pseudokirchneriella subcapitata and were 0.136 mg Zn/L and 0.019 mg Zn/L, respectively. In order to derive the classification of the substance to be registered, these effect values were corrected for the molecular weight of the substance.
The substance is a liquid solution of Carbonic acid, ammonium zinc salt in water, whereas Carbonic acid, ammonium zinc salt is present at concentrations between 13 – 38% (typically 37%). Therefore as a worst case the effect values were recalculated for the highest amount of 38% Carbonic acid, ammonium zinc salt (corresponding to 13.53% Zn). This leads to an acute effect value of 1.005 mg/L and a chronic effect value of 0.140 mg/L for the substance.
On this basis, the substance was classified for the environment as Aquatic Acute 1 (H400, M-factor 1) and Aquatic Chronic 2 (H411) according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).
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