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The described substance is practically insoluble and has a negligible vapour pressure, which results in a Henry's law constant of 0.000324 Pa*m3/mole. Hence ‘bis-(2,4-di-t-butylphenol) pentaerythritol diphosphite’ is not expected to evaporate from the water surface into the atmosphere. Since adsorption to solid soil phase is expected, the described organophosphite will preferentially distribute into the compartments soil and sediment.