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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Read-across; test item: barium dichloride; Daphnia magna: LC50 > 14500 µg/L Ba2+ (non-guideline study, Biesinger & Christensen, 1972)

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
24.62 mg/L

Additional information

In order to assess the short-term toxicity to aquatic invertebrates of the analogous test substance barium dichloride, the test in Daphnia magna was performed according to generally accepted scientific standards and methodology (Biesinger & Christensen, 1972). Ten animals per concentration were exposed for 48 hours in static freshwater.

The nominal/measured test concentrations were not reported for Ba.

Results are based on nominal values, and test did not exactly follow existing guidance, but followed test method well described and test conditions (e.g. test medium composition) were properly identified.

The LC50 was estimated to be 14500 µg/L based on metal ion. For barium titanium trioxide this would mean a LC50 of 24.62 mg/L. Concerning that barium titanium can be considered as stable and that it is slightly soluble in water biodegradation does not occur as barium titanium trioxide is inorganic. Bioaccumulation, expressed by determination of log Pow, as well as adsorption/desorption behaviour are not applicable as the determination of the partition coefficient n-octanol/water (log pow = P-value) applies only for organic substances.

Therefore, barium titanium trioxide does not show a short-term toxicity to aquatic invertebrates.