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EC number: 213-067-8 | CAS number: 921-53-9
Tartaric acid was not found to be significant toxic to neither aquatic invertebrates nor aquatic algae. Furthermore, data predicted by valid QSAR models allow to exclude its toxicity to fish and aquatic microorganisms.
Based on the assumption that in dilute aqueous conditions of defined pH, a salt will be fully dissociated and will behave no differently to the parent acid at identical concentration of the particular speciated form present, the aquatic toxicity of tartaric acid salts (i.e. monosodium, monopotassium, sodium potassium, sodium, potassium and calcium tartrate) may be assessed using data specific for tartaric acid. Therefore, also the tartaric acid salts are deemed to be non-toxic to aquatic environment.
According to Directive 67/548/EEC and to Regulation (EC) n. 1272/2008, the substances should not be classified for the aquatic toxicity because the data currently available are judged as "conclusive but not sufficient for the classification".
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