Registration Dossier
Registration Dossier
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EC number: 295-361-6 | CAS number: 92044-82-1
Endpoint summary
Administrative data
Description of key information
Aquatic toxicity data of fatty acids, C9-C13-neo, barium salts are not available. Read-across to the assessment entities soluble barium substances and neodecanoic acid (structural analogue of fatty acids, C9-13, neo) is applied since the ions of fatty acids, C9-C13-neo, barium salts determine its fate and toxicity in the environment.
Acute (short-term) toxicity data: 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 whereas EC/LC50 values of neodecanoic acid (structural analogue of fatty acids, C9-13, neo) are >100 mg/L.
Chronic (long-term) toxicity: NOEC/EC10 values of 3 trophic levels (algae, invertebrates and fish) range from ≥ 1.15 mg Ba/L to 2.9 mg Ba/L. Reliable chronic data are available from GLP-conform guideline studies for two trophic levels and point to a low potential for toxicity of fatty acids, C9-13, neo and its structural analogues, a 21-d NOEC of 4.78 mg/L neoheptanoic acid and a 14-d NOEC of 2.22 mg/L neodecanoic acid for the growth of Oncorrhynchus mykiss.
The potential of barium cations and fatty acids, C9-13, neo anions for toxicity to aquatic microorganisms is low since the NOEC for respiration inhibition is ≥1000 mg/L BaCl2. Also, neodecanoic acid (structural analogue of fatty acids, C9-13, neo) has a low potential for toxicity to microorganisms based on a NOEC of ≥ 200 mg/L.
Additional information
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