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EC number: 252-552-9
CAS number: 35415-27-1
Key value for biodegradation
Based on the results of a reliable (RL1) enhanced (prolonged) ready
biodegradability test (OECD 301 D) performed compliant with GLP, the
submission substance must be regarded as not persistent (not P) in the
environment (63% mineralisation based on O2 consumption within 60 days).
In order to assess the biotic degradation, a ready biodegradability test
was performed which allows the biodegradability to be measured in an
aerobic aqueous medium. The ready biodegradability was determined in the
Closed Bottle test performed according to slightly modified OECD, EU and
ISO Test Guidelines, and in compliance with the OECD principles of Good
Laboratory Practice. River water was used as the inoculum.
Trinonyl benzene-1,2,4-tricarboxylate did not cause a reduction in the
endogenous respiration. The test substance is therefore considered to be
non-inhibitory to the inoculum.
The test substance was biodegraded by 48% at day 28 in the Closed Bottle
In the prolonged Closed Bottle test, the test item was biodegraded by
63% at day 60 (enhanced biodegradability testing). This result
demonstrates that the test substance is inherently biodegradable.
Moreover, a biodegradation percentage of >60 within a 60-day time period
allows classification of trinonyl benzene-1,2,4-tricarboxylate as not
The test is valid as shown by an endogenous respiration of 1.1 mg/L and
by the total mineralization of the reference compound, sodium acetate.
Sodium acetate was degraded by 76% of its theoretical oxygen demand
after 14 days. Finally, the most important criterion was met with oxygen
concentrations remaining at >0.5 mg/L in all bottles over the test
period. According to these results on biodegradation, the submission
substance does not persist in the environment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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