Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The target substance 1,2,3-Propanetricarboxylic acid, 2-Hydroxy-,tris(C14-C15-alkyl)esters is classified as readily biodegradable.

Additional information

The ready biodegradability of the target substance 1,2,3 -Propanetricarboxylic acid, 2 -Hydroxy-, tris(C14 -C15 -alkyl)ester) was determined with a non-adapted activated sludge over a test period of 48 days in the Modified Sturm Test according to OECD 301 B. Based on this test the test item 1,2,3-Propanetricarboxylic acid, 2-Hydroxy-,tris(C14-C15-alkyl)esters can be considered as readily biodegradable.

Supportive data are available for the source substance Tri (hexyl, octyl, decyl) citrate with the only difference in shorter carbon chain ester groups. The substance exhibited up to 67% biodegradation after 28 d in a ready biodegradability test. The biodegradation of the test substance reached 51% at the end of the 10-d window. But for UVCB substances the 10-day window condition should not be applied. In a study on inherent biodegradability the pass level of 70% was reached. The source substance can be considered as readily biodegradable.

In accordance with column 2 of REACH annex IX, further degradation testing does not need to be conducted because direct or indirect exposition in soil is not probable.