Registration Dossier

Administrative data

Endpoint:
distribution modelling
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:

Data source

Reference
Reference Type:
review article or handbook
Title:
Silicon compounds - Synthetic inorganic silicates.
Author:
Falcone JS
Year:
1997
Bibliographic source:
Kirk-Othmer Encyclopedia of Chemical Technology, 4th ed. Wiley, New York, USA. 22, 1-30.

Materials and methods

Model:
other: General conclusion based on theoretical considerations

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

RM-Freetext:
Due to a strong dependance on pH and concentration which leads to a  complex dynamic polymerisation-depolymerisation equilibrium with  speciation into a variety of mono-, oligo-, and polymeric anions and  amorphous silica, calculations on the distribution in various  environmental compartments are not feasible.
The contribution of anthropogenic inputs to the occurrence in the various  compartments will be negligible compared to the concentrations  contributed to by the natural silica flux.

Applicant's summary and conclusion