Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. colorant (material)
7. pigments
8. [pigment by color]
9. white pigment
10. transparent white pigment
11. calcium carbonate white pigment

Anotations

Scope note:

A fine, white pigment composed of calcium hydroxide and calcium, produced by slaking of lime in water or air to form a thick, white, alkaline paste. It was used for fresco painting where it hardens to form a cohesive film without the aid of a binder. It reacts with proteins, such as egg white or casein, to produce a tough, insoluble film.