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Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

The test substance,Ashes (residues) - Biomass Combustion, was tested for growth inhibition on algae Desmodesmus subspicatus.
The test was performed according to method C.3 - Algal Inhibition Test, Council Regulation (EC) No. 440/2008, published in O.J.L 142, 2008.
GLP study

Key value for chemical safety assessment

EC50 for freshwater algae:
100 mg/L

Additional information

The study was performed without the analytical determination of the test substance concentrations. Only the concentrations of metals in the highest loading rate 100mg·L-1 were analysed in the limit test. For all evaluations and results the loading rates of the test substance were used.

Test results:

72 hour - EbL50>100 mg·L-1 (loading rate)

72 hour - ErL50>100 mg·L-1 (loading rate)

72 hour - NOELRb= 100 mg·L-1  (loading rate)

72 hour - NOELRr = 100 mg·L-1  (loading rate)

Classification of the test substance on the basis of hazard to aquatic environment was performed according to the Directive 93/21/EEC, Annex IV (article 5.2.1.).

According to the classification criteria given in quoted Directive the test substance, Ashes (residues) - Biomass Combustion, is not assigned to any of quoted toxicity categories.