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Physical & Chemical properties

Water solubility

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Key value for chemical safety assessment

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In accordance with Section 2 of REACH Annex XI, it is considered justified to omit the water solubility study required in Section 7.7 of REACH Annex VII on the basis that it is not technically feasible.

An attempt was made to investigate the water solubility, however no experimental determination was possible. Sample solutions saturated in the range of 0.11 to 4.77 % w/w resulted in the formation of stable, uniform dispersions at 20.0 ± 0.5 °C. As this suspended, excess, undissolved test material could not be removed by either centrifugation or filtration techniques, it was not possible to isolate clear, saturated sample solutions suitable for analysis. The observed behaviour in water was consistent with the proposed composition and the extremely low surface tension values (31.4 to 31.5 mN/m).

Furthermore, the salt interaction with diethanolamine was beyond the scope of available prediction methods (computer software and/or QSAR methods) therefore no alternative estimation of the water solubility was possible.