Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by chemical form]
7. compounds (materials)

Anotations

Scope note:

Silicate ester-based compounds, often used as consolidants. Hydrolysis of the silicic acid ester takes place slowly, so that the silicic acid ester can penetrate deeply into the stone to be strengthened; only in this way can a uniform degree of strength be achieved.