Registration Dossier
Registration Dossier
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EC number: 252-917-2 | CAS number: 36211-43-5
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Aquatic toxicity studies with barium 3,5,5-trimetylhexanoate are not available.Read-across to the assessment entities soluble barium substances and trimethylhexanoic acid (and its structural analogue neodecanoic acid) is applied for the assessment of barium 3,5,5-trimethylhexanoate since the ions of barium 3,5,5-trimethylhexanoate determine its fate and toxicity in the environment. Based on dissolved barium concentrations in solution, the ErC50 and NOEC for growth inhibition of algae are >1.15 and >=1.15 mg Ba/L, respectively. Data of neodecanoic acid, i.e. the structural analogue of trimethylhexanoic acid, indicate a low toxic potential to freshwater algae with a 72-h EL50 of >100 mg/L neodecanoic acid. This is supported by QSAR-based estimations for trimethylhexanoic acid. According to the QSAR-based outcome of the model ECOSAR v.2.0, trimethylhexanoic acid has also a low potential for toxicity to algae as the 96-h EC50 and the ChV (ChV = 10^([log (LOEC x NOEC)]/2)) were estimated with 65.0 mg/L and 22.4 mg/L, respectively.
Key value for chemical safety assessment
Additional information
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