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6PPD has a relatively high Koc value of 5754 (calculated). As the hydrolyis occurs fast (half-life 8 h) also the hydrolysis product(s) are taken into account. For 4 -hydroxydiphenylamine (CAS 122 -37 -2), the Koc was calculated to be 398.

The distribution of the parent compound and the two hydrolysis products 4 -hydroxydiphenylamin and N-Phenyl-p-benzoquinone (CAS 2406-04-4) monoimine was calculated using the Mackay distribution model:

 Compartment  6PPD

4-hydroxydiphenylamine

N-phenyl-p-benzoquinone monoimine

 Air (%)  0.75  0.16 0.09 
 Water (%)  11.48  95.87  99.2
 Soil (%)  43.94  2.19  0.39
 Sediment (%)  47.95  1.77  0.32
 Suspended sediment (%)  0.282  0.014  0.003
 Biota (%)  0.03  0.001  0.0002
 Aerosol (%)  0.07  0.001  0.0001
       

The model indicates that the parent compound has a high affinity to soil and sediment whereas the primary hydrolysis products are expected to be distributed mainly in water.