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.

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 cosmetics and …

A little over a hundred years ago the shortened form of alum began to be used to describe a graduate or past attendee of either gender. Although many people feel that alum is informal, it is in increasing …

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. Most alums …

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 alum …

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.

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 preservation, and …

Apr 5, 2024 · Today, alum is primarily used only as an additive to food, cosmetics, medicine, and more. It is a readily available ingredient and a fantastic product. And the best part? It has various health …

Alum is a type of mineral salt, most commonly potassium aluminum sulfate, that has been used for centuries in water purification, food preparation, personal care, and medicine.

The informal word alum refers to a graduate of a school, such as a high school or university. It’s a shortening of alumnus or alumna.In Latin, alumnus specifically refers to a male graduate, and …