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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

From the read across with 1,3 (or 1,4)-bis[1-(tert-butylperoxy)-1-methylethyl]benzene: no effect was recorded indicating that the substance did not inhibit the activated sludge. 

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Additional information

There is no data on 1,4-bis[1-(tert-butylperoxy)-1-methylethyl]benzene. A read across approach is proposed with 1,3 (or 1,4)-bis[1-(tert-butylperoxy)-1-methylethyl]benzene.

In order to predict effects of chemicals in the environment and in biological wastewater treatment plants, an activated sludge respiration inhibition test was performed on 1,3-bis[1-(tert-butylperoxy)-1-methylethyl]benzene according to OECD 209 guideline and GLP requirements.Due to structural analogy, read-across from supporting substance is considered as valid, thus, results given here may apply to [1,3(or 1,4)- Phenylenebis(1-methylethylidene)] bis[tert-butyl] peroxide.The test substance was not soluble in water and therefore the activated sludge was exposed to bis (tert-butyl peroxy isopropyl)benzene adsorbed onto silica gel at a concentration of 1 g/litre. By this exposure no effect was recorded indicating that the obtained distribution of 1,3-bis[1-(tert-butylperoxy) -1-methylethyl]benzene in the water system did not inhibit the activated sludge. Validity criteria were fulfilled.