Britannica AI Icon

white pigment

chemistry
Also known as: hiding pigment

Quick Summary

White pigments are materials that scatter all wavelengths of light, making them appear white and opaque. This opacity hides the underlying surface by preventing light penetration. The most common white pigment is titanium dioxide (TiO2), particularly in its rutile crystal form, due to its high refractive index and cost-effectiveness.1

Other white pigments include zinc oxide (ZnO), zinc sulfide (ZnS), and lithopone. Historically, basic lead carbonate, known as white lead, was widely used but is now restricted due to its toxicity. Zinc oxide is produced through direct or indirect processes and is used in rubber vulcanization, paints, and pharmaceuticals. Titanium dioxide is also used in cosmetics for UV protection and in various products like paints, paper, and toothpaste.1234

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.