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Environmental fate & pathways

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Due to rapid hydrolysis, 2 -ethylhexanoyl chloride will not be present in the environment for a significant time. The substance degrades spontaneously in contact with aqueous media. Therefore, the fate in the environment is mainly based on the hydrolysis product 2 -ethylhexanoic acid.

Based on its calculated log Koc of 1.45 to 2.02 (Koc = 28 to 105; BASF SE, 2009), adsorption of 2 -ethylhexanoyl chloride to soil and sediment is not expected. However, 2 -ethylhexanoyl chloride is expected to hydrolyse rapidly and form 2 -ethylhexanoic acid.

The hydrolysis product 2 -ethylhexanoic acid has a calculated log Koc of 2.69 (value refers to the charged moleculeat pH 7.00; BASF SE, 2010). Therefore, adsorption to solid soil phase is not expected.

If the hydrolysis product is exposed to water, it will not evaporate into the atmosphere from the water surface because of its Henry's Law Constant of 0.289 Pa m³/mol (experimental; BASF SE, 2009).

Based on the results of the Mackay LEVEL 1 calculation, over time the hydrolysis product will preferentially distribute into water (85.4%).