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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
adsorption / desorption: screening
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the physicochemical properties of the substance indicate that it can be expected to have a low potential for adsorption

Data source

Materials and methods

Test material

Constituent 1
Chemical structure
Reference substance name:
Silicic acid, magnesium salt
EC Number:
215-681-1
EC Name:
Silicic acid, magnesium salt
Cas Number:
1343-88-0
Molecular formula:
MgO3Si
IUPAC Name:
Silicic acid, magnesium salt
Constituent 2
Chemical structure
Reference substance name:
Silicic acid, calcium salt
EC Number:
215-710-8
EC Name:
Silicic acid, calcium salt
Cas Number:
1344-95-2
Molecular formula:
CaO3Si
IUPAC Name:
Silicic acid, calcium salt
Test material form:
solid: particulate/powder
Details on test material:
CMS is also available in a paste form which generates the powder form following the drying process.

Results and discussion

Applicant's summary and conclusion

Conclusions:
Silicates are not volatile under environmental conditions due to its chemical nature and inherent physical properties:
they have a moderate water solubility and extremely low vapour pressure, therefore silicates are expected to be distributed mainly into soils/sediments,weakly into the water and probably not at all in the air.
In addition, natural silica/silicates are one of the most abundant materials in the earth's surface.
Executive summary:

Silicates are not volatile under environmental conditions due to its chemical nature and inherent physical properties:  

they have a moderate water solubility and extremely low vapour pressure, therefore silicates  are expected to be distributed mainly into soils/sediments,weakly into the water and probably not at all in the air.

In addition, natural silica/silicates are one of the most abundant materials in the earth's surface.