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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Nanomaterials do not reach equilibrium in adsorption-desorption studies with soils. 

Adsorption and desorption are not applicable because silicon dioxide/silicate and aluminum are two of the most abundant materials in the Earth´s surface.

Additional information

Synthetic amorphous aluminum sodium silicates like Silicic acid, aluminum sodium salt (CAS 1344-00-9, NAS) are not volatile under environmental conditions due to their chemical nature and inherent physical properties: 

Due to their low water solubility and extremely low vapour pressure, silicates are expected to be distributed mainly into soils/sediments, weakly into the water, and probably not at all into the air.

Synthetic amorphous Silicic acid, aluminum sodium salt (CAS 1344-00-9, NAS) is expected to combine undistinguishably with the soil layer or sediment due to its chemical identity with inorganic soil matter and will be subjected to slow natural transformation processes of weathering.