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EC number: 201-766-0
CAS number: 87-69-4
Phytosafe Study Number:
Freshwater algae, Growth inhibition test with Calcium tartrate (OECD 201, March 2006)
Batch No.Camp 09.10
Nominal test concentrations:
Range-finding test:– 0.1 – 1.0 – 10.0 and 99.8 mg/L
Limit test: 99.8 mg/L
January 21 to February 11, 2011
Length of test:
72-hour exposure period
Muséum National d’Histoire Naturel (Paris, France)
EC50for specific growth rate between 0.6 and 1.0 mg/L
EC50for yield between 0.20 and 0.75 mg/L
Specific growth rate
NOEC 72 h ≥ 100 mg/L
Recovery of the test item at the end of test
41 % for the 99.8 mg/L test item treatment(1)
> 100 % for the first two days of testing and then almost zero at the end of test(2)
deviation No.1 from the study plan
deviation No.2 from the study plan
Tartaric acid and its salts are not expected to be toxic to
Based on the data obtained from short-term assays conducted on
several algae strains, tartaric acid and its salts are not expected to
be toxic to this aquatic target.
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 algae.
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