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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

BCF have been predicted for all the representative costituents. The predicted BCF values range from 0.9 to 80 L/kg ww. Of the 15 constituents, no one has a BCF value of greater than 2000 L/kg ww. It is not feasible to perform simulation tests on complex, volatile UVCBs.

Key value for chemical safety assessment

Additional information

The bioconcentration factor (BCF) values of representative constituents of this category has been predicted using the EPISUITE v4.11 BCFBAF (2017) model, which uses methodology described by Arnot-Gobas et al. (2003, 2006, 2008). The predicted BCF values range from 0.9 to 80 L/kg ww. Of the 15 constituents, no one has a BCF value of greater than 2000 L/kg ww.

Constituent Name CAS No. BCF Upper Trophic Arnot Gobas (5% Lipid normalisation) (L/Kg ww)  BCF Regression model (L/Kg ww)
Benzene 000071-43-2 6.91 12
But-1-ene 000106-98-9 11 18
But-2-ene, cis- 000590-18-1 9.4 16
But-2-ene, trans- 000624-64-6 9.4 16
Buta-1,3-diene  000106-99-0 4.7 10
Butane 000106-97-8 29 37
Carbon Monoxide 000630-08-0 2.8 6.9
Ethane 000074-84-0 3.2 7.2
Ethene  [aka Ethylene] 000074-85-1 1.0 2.6
Methane 000074-82-8 0.9 2.4
Pentane 000109-66-0 69 80
Prop-1-ene 000115-07-1 3.0 6.8
Prop-1-ene, 2-methyl- 000115-11-7 10 16
Propane 000074-98-6 10 17
Propane, 2-methyl- 000075-28-5 22 31