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Environmental fate & pathways

Hydrolysis

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Description of key information

In accordance with section 1 of REACH Annex XI, the hydrolysis study does not need to be conducted as Hydrocarbons, C14-20 Aliphatics (≤2%aromatics), are not expected to undergo hydrolysis in the environment due to a lack of hydrolyzable functional groups and therefore not conducting the test is scientifically justifiable.

Key value for chemical safety assessment

Additional information

Hydrolysis is a reaction in which a water molecule of hydroxide ion substitutes for another atom of group of atoms present in a chemical resulting in a structural change of that chemical. Potentially hydrolysable groups include alkyl halides, amides, carbamates, carboxylic acid esters and lactone epoxides, phosphate esters, and sulfonic acid esters. The lack of a suitable leaving group renders compounds resistant to hydrolysis.

 

The chemical constituents that comprise hydrocarbons, C14-20 Aliphatics (≤2% aromatics) consist entirely of carbon and hydrogen and do not contain hydrolysable groups. As such, they have a very low potential to hydrolyze. Therefore this degradative process will not contribute to their removal from the environment.