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 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 …

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 …

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 …

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 …

Feb 23, 2025 · Alum is a naturally occurring mineral known for its antiseptic, antibacterial, and astringent properties. Found in crystal or powder form, it dissolves easily in water. It is commonly used in water …

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 …

Dec 3, 2025 · Alum represents a class of chemical compounds utilized for millennia, dating back to ancient Egyptian practices for purification and preservation. This group of chemicals is highly …

Jul 23, 2025 · What is Alum? Alum is an inorganic compound that exists as a hydrated form of double salt. Alum is composed of aluminum, water molecules, and sulphates. Alums are normally found in …

Jan 29, 2025 · At its core, an alum is a double salt, typically formulated as XAl (SO 4) 2 ·12H 2 O, where X represents a monovalent cation such as potassium (K +), sodium (Na +), or ammonium (NH 4+). …