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:

An soft, whitish, absorbent powder derived from the siliceous skeletons of microscopic water plants called diatoms, composed of 88% silica. It is used as a poultice, a desiccating insecticide, a decolorizer and filtration aid for purifying oils, fats, and waxes, an inert pigment, a filler in paper, paint, brick, floor tiles, ceramics, linoleum, plastic, soap, and detergent, an insulation for boilers and blast furnaces, as sound insulation, and as a very mild abrasive in metal polishes and toothpaste. It reduces gloss, acts as a suspending agent, increases viscosity, and absorbs dyes well, thus is used as a base for lake colors.