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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Hydrolysis rate of FeSi is slow. In one and seven days experiments at different pH values (1.4-7.4) all the tested smelted FeSi alloys were dissolved < 0.1% by mass (KTH 2009). The test method was OECD transformation dissolution screening test and screening of released metal components in synthetic biological media (< 1 mm FeSi particles) In comparison, melted product MgFeSi was dissolved > 10 % in the same test set. 

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