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Physical & Chemical properties

Dissociation constant

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Description of key information

The water-solubility of the test item is independent of the pH. Also based on structure considerations, the test item can not dissociate in water.

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Additional information

The water-solubility of the test item is independent of the pH. If the test item could dissociate, the solubility would increase. This does not take place in either alkaline or acidic aqueous media (pH=5, 7 or 9). The test item cannot dissociate in water due to a lack of relevant functional groups. Hence, the dissociation constant is irrelevant. Even if the test item was able to split in a cationic and anionic group, the water solubility of the substance is 1.25 mg/L and hence very low to obtain a suitable dissociation constant.