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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The short-term toxicity of TBHP to aquatic plants (freshwater algae) has been investigated in a study conducted in accordance with the OECD 201 guideline and under GLP : the substance proved to be moderately toxic in a 72h test using Selenastrum capricornutum.

Key value for chemical safety assessment

EC50 for freshwater algae:
1.47 mg/L
EC10 or NOEC for freshwater algae:
0.22 mg/L

Additional information

TBHP is moderately toxic toxic to freshwater algae, inhibiting algal cell growth: 72h ErC50 1.47 mg/l. A NOEC value (for biomass and/or growth rate) of 0.22 mg/l was demonstrated. The key parameter EC50 has been expressed in terms of dry TBHP.