Crystal of potassium alum, KAl(SO 4) 2 ·12H 2 O. An alum (/ ˈ æ l ə m /) is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula X Al(SO 4) 2 ·12 H 2 O, such that X is a monovalent cation such as potassium or ammonium. [1] By itself, "alum" often refers to potassium alum, with the ...

2024年5月5日 · Alum refers to a collection of chemical compounds that are hydrated sulfate salts of aluminum and usually one other metal. Common forms of alum include hydrated potassium aluminum sulfate, ammonium aluminum sulfate, and sodium aluminum sulfate. The different compounds have different functions.

alum, any of a group of hydrated double salts, usually consisting of aluminum sulfate, water of hydration, and the sulfate of another element. A whole series of hydrated double salts results from the hydration of the sulfate of a singly charged cation (e.g., K +) and the sulfate of any one of a number of triply charged cations (e.g., Al 3+).

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 found in kitchen pantries is potassium alum.

2024年4月5日 · 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 benefits and uses and it does not cost much! Read on to …

The meaning of ALUM is a potassium aluminum sulfate KAl(SO4)2·12H2O or an ammonium aluminum sulfate NH4Al(SO4)2·12H2O used especially for its astringent and styptic properties. How to use alum in a sentence.

2023年12月21日 · Alum is a compound that contains aluminum. People use alum for the skin to reduce sweating, and to treat shaving irritation or cuts.

2023年8月9日 · Alum is an inorganic compound consisting of water molecules, aluminum, other metals besides aluminum, and sulfates. Alum, in its hydrated state, is classified as a double salt. There are various forms of alum, including Potash Alum, Soda Alum, Ammonium Alum, and …

Alum is an inorganic chemical compound that is generally made up of water molecules, aluminium or other metals and sulphates. Alum is basically a hydrated double sulphate salt of aluminium. The general chemical formula for alum is XAl(SO 4) 2 ·12H 2 O. Alums can occur as minerals. For example, alunite and leucite.

The answer to the question “What is alum used for in cooking?” **Alum is primarily used in cooking as a food additive to enhance crispness, improve texture, and act as a preservative.** 1. What is alum? Alum is a chemical compound known as potassium aluminum sulfate. It is a white crystalline powder with various applications. 2.