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. Since the water solubility of the main constituents of Reaction mass of bis(2-propylheptyl) hexanedioate and O6-[2,2-bis[[6-oxo-6-(2-propylheptoxy)hexanoyl]oxymethyl]butyl] O1-(2-propylheptyl) hexanedioate are very low and the log Pow values high, the constituents are expected to mainly distribute to sediment and soil. However, as the multiconstituent substance is readily biodegradable according to the OECD criteria, the substance will not be persistent in the environment. The constituents are not expected to evaporate into the atmosphere due to the low vapor pressure. Abiotic hydrolysis is not relevant, since the substance is readily biodegradable and thus expected to be eliminated through biodegradation in natural waters. 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 dicarboxylic acid and the free alcohol. From literature it is well known, that these hydrolysis products will be metabolised and excreted in fish effectively (for detailed information please see chapter 5.3 of technical dossiers). This is supported by low calculated BCF values calculated for the constituents and its transient metabolites (BCF << 2000 L/kg ww; BCFBAF v3.01; Arnot-Gobas, including biotransformation, upper trophic).