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PBT assessment

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PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB
Justification:

Persistance:

The test substance was tested for ready biodegradability in the Carbon Dioxide Evolution Test (OECD 301B). Based on the rate of biodegradation of 80-90 % CO2/ThCO2 at the end of exposure the test substance can be evaluated as readily biodegradable in this test.

Bioaccumulation:

Not B/vB based on the BCF <= 2000 L/kg:

BCF was calculated with EPI suite, recognizing the biotransformation of the esters, the BCF values are:

Nonyl methacrylate Cas: 2696-43-7

Log BCF (regression-based estimate): 1.73 (BCF = 53.2 L/kg wet-wt)

Biotransformation Half-Life (days) : 0.471 (normalized to 10 g fish)

Log BAF (Arnot-Gobas upper trophic): 2.28 (BAF = 193 L/kg wet-wt)

Log Kow used by BCF estimates: 5.20

Estimated Log BCF = 1.726 (BCF = 53.24 L/kg wet-wt)

 

Decyl methacrylate Cas: 3179-47-3

Log BCF (regression-based estimate): 2.05 (BCF = 112 L/kg wet-wt)

Biotransformation Half-Life (days) : 0.649 (normalized to 10 g fish)

Log BAF (Arnot-Gobas upper trophic): 2.40 (BAF = 251 L/kg wet-wt)

Log Kow used by BCF estimates: 5.70

Estimated Log BCF = 2.050 (BCF = 112.3 L/kg wet-wt)

 

Undecyl methacrylate Cas: 16493-35-9

Log BCF (regression-based estimate): 2.37 (BCF = 237 L/kg wet-wt)

Biotransformation Half-Life (days) : 0.894 (normalized to 10 g fish)

Log BAF (Arnot-Gobas upper trophic): 2.48 (BAF = 303 L/kg wet-wt)

Log Kow used by BCF estimates: 6.19

Estimated Log BCF = 2.374 (BCF = 236.7 L/kg wet-wt)

Toxicity:

The test substance do not meet the criteria to be classified as T substance according to Annes XIII of REACH Regulation (EC) No 1907/2006.