Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Partitioning of substances into the different environmental compartments depends mainly on their physico-chemical properties. All starting materials are readily biodegradable. Due to the size and complexity (being triesters) the test substance can only be considered inherently biodegradable. However, this indicates that neither the test substance nor the metabolites will be persistent in the environment. Similarly since all substances are not likely to be present in the atmosphere due to their low vapor pressure (<1 Pa), indirect photolysis is not to be expected. Abiotic hydrolysis is not relevant, since the fatty acids are readily biodegradable and the sucrose esters are not susceptible to abiotic hydrolysis. 

Due to log Pow and log KOC values > 3 the sucrose esters will mainly distribute into soil and sediment. Based on the rapid environmental biodegradation and metabolism via enzymatic hydrolysis, relevant uptake and bioaccumulation in aquatic organisms is not expected. Enzymatic breakdown will initially lead to the free fatty acid and the sugar. From literature it is well known, that these hydrolysis products will be metabolized and excreted in fish effectively (for detailed information please see chapter 5.3 of the technical dossier)