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EC number: 205-633-8
CAS number: 144-55-8
Two reliable studies are available reporting results on exposure
to NaHCO3 for three different species: Daphnia magna (Leblanc and
Surprenant, 1984), Ceriodaphnia dubia (Farag et al., 2013) and Lampsilis
siliquoidea (Farag et al., 2013).
Leblanc and Surprenant (1984) was described already on page 20 of
the OECD SIDS dossier (2002). Please find hereafter the text:
Leblanc and Surprenant (1984) carried out a (chronic) reproduction
test with D. magna. Test solutions were prepared to contain the
appropriate concentrations of salts to yield a total hardness of 170
mg/l CaCO3 (USEPA 1975). At the tested concentration sodium bicarbonate
of 576 mg/l the survival was 100% and the cumulative number of offspring
per female did not significantly differ from the control. This
demonstrates that the 21-day Daphnia magna NOEC is higher than 576 mg/l.
Although the study is not carried out according to OECD 202, it is very
Farag et al. (2013) conducted a study exposing
neonate of the water flea, C. dubia, for 7 days to a
concentration range of 500-1500 mg/L of NaHCO3. The study was
conducted following the EPA guideline EPA 600/4-91/002 “Short term
methods for estimating the chronic toxicity of effluents and receiving
waters to aquatic organisms” and the validity criteria of the test were
satisfied. Results showed a LC50 of 1192 mg NaHCO3/L and IC20
for reproduction of 359 mg NaHCO3/L. Furthermore, newly
transformed freshwater mussels, L. siliquoidea, were
also exposed in a separated experiment for 10 days to a
concentration range of 500-2000 mg/L of NaHCO3. The study was
conducted following the ASTM guideline E 2455-06 “Standard guide for
conducting laboratory toxicity tests with freshwater mussels”. Results
showed an EC50 and an IC20 for immobilization of 1061 mg NaHCO3/L
and 952 mg NaHCO3/L, respectively.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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