Kaolin China Clay
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In ceramics (it is the main component of porcelain)
in toothpaste
as a light diffusing material in white incandescent light bulbs
in cosmetics
in 'pre-work' skin protection and barrier creams[48]
in paint to extend the titanium dioxide (tio2) white pigment and modify gloss levels
for modiying the properties of rubber upon vulcanization
in adhesives to modify rheology[49]
in organic farming as a spray applied to crops to deter insect damage, and in the case of apples, to prevent sun scald
as whitewash in traditional stone masonry homes in nepal (the most common method is to paint the upper part with white kaolin clay and the middle with red clay; the red clay may extend to the bottom, or the bottom may be painted black)
as a filler in edison diamond discs[50]
as an indicator in radiological dating since kaolinite can contain very small traces of uranium and thorium
to soothe an upset stomach, similar to the way parrots (and later, humans) in south america originally used it[51] (more recently, industrially-produced kaolinite preparations were common for treatment of diarrhea; the most common of these was kaopectate, which abandoned the use of kaolin in favor of attapulgite and then (in the united states) bismuth subsalicylate (the active ingredient in pepto-bismol))
for facial masks or soap[52]
as adsorbents in water and wastewater treatment[53]
to induce blood clotting in diagnostic procedures, e.g. Kaolin clotting time
in its altered metakaolin form, as a pozzolan; when added to a concrete mix, metakaolin accelerates the hydration of portland cement and takes part in the pozzolanic reaction with the portlandite formed in the hydration of the main cement minerals (e.g. Alite).
In its altered metakaolin form, as a base component for geopolymer compounds
as a component of quik-clot combat gauze, a special gauze preparation designed to stop bleeding from extensive wounds
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