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EC number: 201-766-0
CAS number: 87-69-4
Tartaric acid and its salts are not toxic to aquatic invertebrates.
Tartaric acid was not significant toxic to D. magna in two
short-term tests. Furthermore, this substance was predicted to be
non-toxic to Daphnia by two valid QSAR models.
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
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