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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 values ranging from 12 to 140 were determined in a study conducted according to OECD Guideline 305 C at 25°C. The calculation of BCF yielded a value of 95.41. These results indicate a low potential for accumulation of alpha-methylstyrene in fish.

Key value for chemical safety assessment

BCF (aquatic species):
140 dimensionless

Additional information

Reliable information from a guideline study documented in sufficient details and from a generally accepted calculation model are available.

In a study conducted according to OECD Guideline 305 C (Bioaccumulation: Test for the Degree of Bioconcentration in Fish), fish were exposed to test substance concentrations of 0.03 and 0.3 mg/L at 25°C for 56 d under flow through conditions. BCF values of 12 -113 (0.03 mg/L) and 15 -140 (0.3 mg/L) were determined. Furthermore, results of a calculated bioconcentration factor BCF is available. The generally accepted calculation model yielded a BCF=95.41. These results indicate a low potential for accumulation of alpha-methylstyrene in fish.