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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

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.