Registration Dossier
Registration Dossier
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EC number: 225-167-9 | CAS number: 4696-57-5
Endpoint summary
Administrative data
Description of key information
Aquatic toxicity data of barium dilaurate are not available. Read-across to the assessment entities soluble barium substances and lauric acid is applied for the assessment of barium dilaurate since the ions of barium dilaurate determine its fate and toxicity in the environment. Reliable data are available for soluble barium substances and lauric acid (i.e. C12 fatty acid) indicate that the moiety of ecotoloxicological concern are barium cations.
Short-term (acute) EC/LC50 values of 3 trophic levels (algae, invertebrates and fish) range for barium from > 1.15 mg Ba/L to 14.5 mg Ba/L and chronic (long-term) NOEC/EC10 values for algae, invertebrates and fish from ≥ 1.15 mg Ba/L to 2.9 mg Ba/L. Further, the potential of barium cations for toxicity to aquatic microorganisms is low since the 3-h NOEC for respiration inhibition is >= 1000 mg/L BaCl2.
Aquatic toxicity data of lauric acid point to a low toxic potential to aquatic algae and invertebrates. The ecotoxic potential of the fatty acid chain, i.e. laurate, is assumed to be negligible. Fatty acids are generally not considered to represent a risk to the environment, which is reflected in their exclusion from REACH registration requirements (c.f. REACH Annex V (Regulation (EC) No 987/2008)).
In sum, the potential of barium dilaurate for toxicity to aquatic organisms appears to be low.
Additional information
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