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Environmental fate & pathways

Adsorption / desorption

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Description of key information

For tert-butyl acrylate Koc values were calculated to be 138.9 L/kg (log Koc =2.1428) and 23.14 L/kg (log Koc =1.3643) when based on the log Kow method and the MCI method, respectively. Based on a log Koc of <3 adsorption to solid soil phase is not expected.

Key value for chemical safety assessment

Additional information

There are no experimental data on the potential adsorption to the solid soil phase of tert-butyl acrylate. Based on an estimated Koc of 138.9 and 23.14 (Kow and MCI method) calculated by SRC KOCWIN v2.00 (corrected log Koc = 2.1428 and 1.3643, respectively), adsorption to solid soil phase is not expected (BASF SE, 2017). The potential for adsorption to soil, sediment, and suspended solids is low (BASF SE, 2017).

QSAR-disclaimer:

In Article 13 of Regulation (EC) No 1907/2006, it is laid down that information on intrinsic properties of substances may be generated by means other than tests, provided that the conditions set out in Annex XI (of the same Regulation) are met.

According to Annex XI of Regulation (EC) No 1907/2006 (Q)SAR results can be used if (1) the scientific validity of the (Q)SAR model has been established, (2) the substance falls within the applicability domain of the (Q)SAR model, (3) the results are adequate for the purpose of classification and labeling and/or risk assessment and (4) adequate and reliable documentation of the applied method is provided.

For the assessment of tert-butyl acrylate (Q)SAR results were used for adsorption / desorption.The criteria listed in Annex XI of Regulation (EC) No 1907/2006 are considered to be adequately fulfilled and therefore the endpoint(s) sufficiently covered and suitable for risk assessment.