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Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Ready Biodegradation: 73.2% in 28 days (OECD 301F).

Additional information

For the purposes of modelling the fate of each constituents block in waste water treatment plant, a standard biodegradation rating for individual constituents was assigned on the basis of the BIOWIN score and expert judgement. As far as possible, the constituents allocated to each hydrocarbon block had the same BIOWIN-based biodegradation rating. However, to avoid use of too many blocks, and to ensure that the range of log Kow values within individual blocks was not excessive, in some cases RB10 and RBN and also INHN and INHY constituents were grouped together. Where this was necessary, the overall degradation rating for the block was assigned on a case-by-case basis, taking into account the rating for the most abundant constituent(s) in the block.