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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The estimated values of adsorption coefficient obtained by QSAR, using Log10 Pow values for the test material were calculated to be 5.28 for the test material, 1.78 for 2-ethylhexanol and 0.40 for boric acid.

Key value for chemical safety assessment

Additional information

Hydrolytic instability of the test material meant that testing via Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001 was not possible. Therefore the adsorption coefficient of the test material, and its proposed hydrolysis products for environmental consideration, was estimated by Quantitative Structure Activity Relationships (QSAR). The details of the calculation are provided in the technical guidance documents in support of Commission Directive 93/67/EEC on risk assessment for new notified substances and the Commission Regulation (EC) 1488/94 on risk assessment for existing substances. The results are summarised in the table below:

Component

Log10 Koc

Test material

5.28

2-ethylhexanol

1.78

Boric acid

0.40