sodium alum

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• sodium alum — noun : a crystalline double salt NaAl(SO4)2.12H2O used similarly to potassium alum; sodium aluminum sulfate dodecahydrate called also soda alum …   Useful english dictionary

• sodium alum — noun a water soluble mineral NaAl(SO)·12(HO); a form of alum in which potassium is replaced by sodium …   Wiktionary

• Alum — This article is about the chemical compound. For other uses, see Alum (disambiguation). Bulk alum Alum (  / …   Wikipedia

• sodium aluminum sulfate — noun : a salt NaAl(SO4)2 occurring either in the anhydrous form as a fine powder used as an acid ingredient of baking powder or in the hydrated forms mendozite and sodium alum …   Useful english dictionary

• alum — alum1 [al′əm] n. [ME & OFr < L alumen, alum: for IE base see ALE] 1. a double sulfate of a monovalent metal or radical (as sodium, potassium, or ammonium) with a trivalent metal (as aluminum, iron, or chromium): it is used as an astringent, as …   English World dictionary

• alum — alum1 /al euhm/, n. Chem. 1. Also called potash alum, potassium alum. a crystalline solid, aluminum potassium sulfate, K2SO4·Al2(SO4)3·24H2O, used in medicine as an astringent and styptic, in dyeing and tanning, and in many technical processes. 2 …   Universalium

• Soda alum — Sodium alum, Na2SO4·Al2(SO4)3·24H2O, is a form of alum, which mainly occurs in nature as the mineral mendozite. It is very soluble in water, and is extremely difficult to purifyFact|date=September 2008. In the preparation of this salt, it is… …   Wikipedia

• alum — A double sulfate of aluminum and of an alkaline earth element or ammonium; chemically, an a. is any one of the markedly astringent double salts formed by a combination of a sulfate of aluminum, iron, manga …   Medical dictionary

• soda alum — noun : sodium alum especially in the isometric crystal form but not isostructural with potash alum compare mendozite …   Useful english dictionary

• Soda alum — Soda So da, n. [It., soda, in OIt., ashes used in making glass, fr. L. solida, fem. of solidus solid; solida having probably been a name of glasswort. See {Solid}.] 1. (Chem.) (a) Sodium oxide or hydroxide. (b) Popularly, sodium carbonate or… …   The Collaborative International Dictionary of English

• Potassium alum — Chembox new Name = Potassium aluminium sulfate ImageSize = 200px OtherNames = potassium alum, potash alum Section1 = Chembox Identifiers CASNo = 7784 24 9 Section2 = Chembox Properties Formula = KAl(SO4)2 MolarMass = 258.207 g/mol Density = 1.76… …   Wikipedia