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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

Tris-(2-ethylhexyl)amine can be evaluated as having no long-term influence on nitrogen transformation in soils.

Key value for chemical safety assessment

Long-term EC10 or NOEC for soil microorganisms:
1 000 mg/kg soil dw

Additional information

In a study according to OECD 216 (soil microorganisms - nitrogen transformation test) the EC10 was determined to be 1000 mg/kg dw after 28 days; the EC25 and EC50 values were determined to be >1000mg/kg dw at the end of exposure. The nitrate amounts determined in the test assay without Luzerne meal on day 28 show a significant increase (compared with the same test assay of day 0).

Because the degree of inhibition at 1000 mg/kg Dw was less than 25 % at the end of the exposure, Tris-(2-ethylhexyl)amine can be evaluated as having no long-term influence on nitrogen transformation in soils.