Abstract
Evaluation of Egyptian kaolin as a filler and extender pigment was carried out by measuring moisture content, water soluble salt content, hydrogen ion concentration, specific gravity, bulking value, oil absorption, acid and alkali resistance, particle size distribution and particle shape, and comparing it with a commercial imported sample. X‐ray and chemical analysis were used for the identification of the pigments. It was found that it is economical to use the Egyptian kaolin for it as a natural white fine mineral that is available in quantity in a relatively pure state. The physical and chemical properties peculiar to Egyptian kaolin make it an ideal choice as a filler and extender pigment, this is in comparison with the commercial imported sample.
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