Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

 Silicic acid, aluminium magnesium sodium salt is an inorganic solid and moderately soluble in water. Due to its chemical nature and stability, significant hydrolysis is not expected.

Under static conditions hydrolysis is likely resp possible under dynamic conditions, see Affolter, 2019, OECD 111. Here, at pH values < 7 a dissociation of SMAS could be observed whereas at pH = 7 or pH > 7 a dissociation of SMAS is neglectable.


Based on the chemical nature, inorganic structure and chemical stability of Silicic acid, aluminium magnesium sodium salt, phototransformation in air, water and soil is not expected. 

If released into the environment, the substance cannot be distinguished from soil or sediment due to its similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). Due to low water solubility and extremely low vapour pressure, it is expected to distribute mainly into soils and sediments, weakly into water and probably not at all into the air. See also Affolter 2016, OECD 106.

Additional information