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Environmental fate & pathways

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Based on the chemical structure, the estimated Koc values increase with increasing chain length from 10.57 for azelaic acid (C9) up to 51,050 for stearic acid (C18). Thus, remarkable adsorption potential is predicted for fatty acids starting at a chain length of 12 and higher.

According to the Mackay Level I fugacity model fatty acids with a chain length of C8 and C9 partition mainly to the water phase, whereas with increasing chain length starting with C12 fatty acids partition, due to rising Koc values, to sediment and soil.

Volatilisation is not expected to be a significant transport process or dissipation rout for fatty acids in the environment.