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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The substance is readily biodegradable according to OECD criteria.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Biodegradation was assessed in a test according to OECD guideline 301F using domestic activated sludge as inoculum (BASF 1992, report no. 91/1784/26/1). After 28 days >80% of the substance was degraded related to the oxygen consumption.

This result is supported by a study according to EPA OTS 796.3260 (GAF Chemical Corporation, 1987; report no. 87 -0803 -11). This method is the modified Sturm test. The inoculum was activated sludge which was acclimated to the test material. The substance was degraded to 82% after 28 d of exposure.

It can be concluded that NOP is readily biodegradable according to OECD criteria.