Alum - Wikipedia
By itself, alum often refers to potassium alum, with the formula KAl (SO4)2·12H2O. Other alums are named after the monovalent ion, such as sodium alum and ammonium alum.
What is Alum | About Alum and Alum Substitution – McCormick
May 28, 2025 · Alum, also known as potassium aluminum sulfate, is a naturally occurring mineral compound used across cultures and industries in various ways. The most common type of …
What Is Alum and How Is It Used? - ThoughtCo
May 5, 2024 · Alum is a type of chemical compound that is commonly used in everyday and industrial applications. You'll find alum in everything from baking powder and toothpaste to …
Alum: What It Is, Medicinal Benefits, Dosage, and Side Effects
Jul 15, 2025 · Alum is a naturally occurring mineral salt with powerful astringent, antibacterial, and deodorizing effects. It is used in oral hygiene, wound care, water purification, food …
13 Surprising Alum Powder Uses and Benefits - The Good Human
Apr 5, 2024 · Alum is a granular powder or crystalline mass that is odorless, colorless, and transparent. It has a flavor that is both sweet and astringent. Its molecular weight is 458.28 …
Alum | Definition, Uses, Formula, & Facts | Britannica
Alums occur naturally in various minerals. Potassium alum, for example, is found in the minerals kalinite, alunite, and leucite, which can be treated with sulfuric acid to obtain crystals of the …
Alum: What It Is, Uses, Benefits and Safe Ways to Use It
Aug 21, 2025 · Discover what alum is, its many uses—from skincare to water purification—its surprising benefits, possible side effects, and how to use it safely in everyday routines.