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Environmental fate & pathways

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Determining a Kd-value for calcium magnesium oxide is not relevant, since this molecule reacts with water to release calcium ions, magnesium ions and hydroxyl ions. Reliable Kd-values for calcium range from 5.3 L/kg to 49.1 L/kg and are added as supportive information. The Kd-concept is not relevant for hydroxyl ions, since the behaviour of these ions depends on the pH buffer capacity of the tested medium.