Definition of Alum. Meaning of Alum. Synonyms of Alum

Here you will find one or more explanations in English for the word Alum. Also in the bottom left of the page several parts of wikipedia pages related to the word Alum and, of course, Alum synonyms and on the right images related to the word Alum.

Definition of Alum

Alum
Alum Al"um, n. [OE. alum, alom, OF. alum, F. alun, fr. L. alumen alum.] (Chem.) A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of water of crystallization. Note: Common alum is the double sulphate of aluminium and potassium. It is white, transparent, very astringent, and crystallizes easily in octahedrons. The term is extended so as to include other double sulphates similar to alum in formula.
Alum
Alum Al"um, v. t. To steep in, or otherwise impregnate with, a solution of alum; to treat with alum. --Ure.

Meaning of Alum from wikipedia

- itself, "alum" often refers to pot****ium alum, with the formula KAl(SO 4) 2·12H 2O. Other alums are named after the monovalent ion, such as sodium alum and...
- Pot****ium alum, potash alum, or pot****ium aluminium sulfate is a chemical compound: the double sulfate of pot****ium and aluminium, with chemical formula...
- Alum is a species and cl**** of chemical compound. Pot****ium alum, the prototypical member of the cl****, often referred to simply as alum. Alum may also...
- Chrome alum or Chromium(III) pot****ium sulfate is the pot****ium double sulfate of chromium. Its chemical formula is KCr(SO4)2 and it is commonly found...
- Alum-(K) is a hydrous pot****ium aluminium sulfate mineral with formula KAl(SO4)2·12(H2O). It is the mineral form of pot****ium alum and is referred to as...
- The Alum Shale Formation (also known as alum schist and alum slate) is a formation of black shale of Middle Cambrian to Tremadocian (Lower Ordovician)...
- Alum Rock may refer to: Alum rock, specific chemical compound and a cl**** of chemical compounds. Alum Rock, California, United States, formerly a town...
- NaAl(SO4)2·12H2O (sometimes written Na2SO4·Al2(SO4)3·24H2O). Also known as soda alum, sodium alum, or SAS, this white solid is used in the manufacture of baking powder...
- Alum Bay is a bay near the westernmost point of the Isle of Wight, England, within close sight of the Needles rock formation. Of geological interest and...
- aluminium sulfate, also known as ammonium alum or just alum (though there are many different substances also called "alum"), is a white crystalline double sulfate...
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