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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

A respiration inhibition test with activated sludge according OECD guideline 209 was conducted to determine the toxicity of di(2-ethylhexyl)peroxydicarbonate towards microorganisms. The 3-h NOEC for di(2-ethylhexyl)peroxydicarbonate is 15 mg/L. 

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
15 mg/L

Additional information

The effect of di(2-ethylhexyl)peroxydicarbonate in isododecane (25 %) on respiration of activated sewage sludge was evaluated using a 3-hour static test according OECD guideline 209. No inhibition (0 %) of the respiration rate was noted at 2, 10 and 20 mg/L of di(2-ethylhexyl)peroxydicarbonate, relative to mean of the controls. The 3-hour EC50 of the test item for activated sludge is > 20 mg/L. As the validity criteria were met (the difference between the two controls was below 15 % and the EC50 of the reference substance 3,5-dichlorophenol was between 5 and 30 mg/L), the test is considered to be valid.

This result can be used for the registration of pure di(2-ethylhexyl)peroxydicarbonate after back-calculation to the content of di(2-ethylhexyl)peroxydicarbonate. The NOEC for pure di(2-ethylhexyl)peroxydicarbonate therefore is 15 mg/L.