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Environmental fate & pathways

Hydrolysis

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Description of key information

Available information indicates that the material is likely to be resistant to hydrolysis due to a lack of functional groups that are hydrolytically reactive. 

Key value for chemical safety assessment

Additional information

Hydrolysis is a reaction in which a water molecule or hydroxide ion substitutes for another atom or group of atoms present in a chemical resulting in a structural change of that chemical. Potentially hydrolyzable groups include alkyl halides, amides, carbamates, carboxylic acid esters and lactones, epoxides, phosphate esters, and sulfonic acid esters (Neely and Blau, 1985). The lack of a suitable leaving group renders compounds resistant to hydrolysis.

The chemical constituents of diesel/gas oil fractions consist entirely of carbon and hydrogen and do not contain hydrolyzable groups. As such, they have a very low potential to hydrolyze. Therefore, this degradative process will not contribute to removal from the environment.

The available information indicates that the material is likely to be resistant to hydrolysis due to a lack of functional groups that are hydrolytically reactive. Therefore, this fate process will not contribute to measurable degradative loss from the environment. Further testing is not required under Annex XI, section 1.2.