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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

One reliable study is available for the registered substance. The substance exhibits a 3h EC50 for STP microorganisms higher than 1000 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L
EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

The inhibitory effect of Phosphoric acid, mono- and bis(branched and linear pentyl) esters (AAP) on the respiration rate of aerobic wastewater microorganisms of activated sludge was investigated in a 3h respiration inhibition test according to OECD guideline for Testing of Chemicals, n°209 (2010) under GLP compliance.

No significant effects on microorganisms respiration was recorded after 3 hours exposure of the sludge to 1000 mg/L the registered mixture and therefore the following results were determinated:

3h EC50>1000 mg/L

3h NOEC = 1000 mg/L

These results were assessed to be suitable for chemical risk assessment purposes.