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Description of key information

Key value for chemical safety assessment

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In accordance with column 2 of REACH Annex VIII, the hydrolysis test does not need to be conducted if the substance is highly insoluble in water.

The water solubility of C.I. Pigment Yellow 139 was experimentally determined by Clariant to be 2.9 µg/L. This result is supported by a BASF study which obtained a water solubility of 34 µg/L. Based on these available test results, C.I. Pigment Yellow 139 can be considered as highly insoluble.