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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The substance has a low potential for bioaccumulation due to rapid hydrolysis.

Key value for chemical safety assessment

BCF (aquatic species):
53 dimensionless

Additional information

Low accumulation potential is expected for magnesium hexafluorosilicate due to rapid dissociation/ hydrolysis in aqueous media. Fluoride, which is the transformation product, has low BCF. According to EU RAR for hydrogen fluoride, BCG values for fluoride in fish were 53 -58 (d.w) and <2 (w.w.) and for crustacea was <1 (w.w). For classification as bioaccumulative, BCF should be higher than 500.Thus, the substance does not classify for bioaccumulation.