Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Potassium alum, potash alum, or potassium aluminium sulfate is a chemical compound: the double sulfate of potassium and aluminium, with chemical formula KAl(SO4)2. It is commonly encountered as the dodecahydrate, KAl(SO4)2·12H2O. It crystallizes in an octahedral structure in neutral solution and cubic structure in an alkali solution with space group P a −3 and lattice parameter of 12.18 Å.[4] The compound is the most important member of the generic class of compounds called alums, and is often called simply alum.[5]
Potassium alum is commonly used in water purification, leather tanning, dyeing,[6] fireproof textiles, and baking powder as E number E522. It also has cosmetic uses as a deodorant, as an aftershave treatment and as a styptic for minor bleeding from shaving.[7][8]
^Cite error: The named reference WebMineral was invoked but never defined (see the help page).
^International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. Electronic version.
^"Material Safety Data Sheet - Aluminum potassium sulfate dodecahydrate". Archived from the original on 25 October 2020. Retrieved 26 July 2020.
^"Crystal structure of the alums". Crystallography Open Database. 1934. Archived from the original on 15 April 2018. Retrieved 15 April 2018.
^Bottomley, L.; Bottomley, L.A. (2010). Chemistry 1310: Laboratory Manual. Plymouth, MI: School of Chemistry & Biochemistry, Georgia Institute of Technology and Hayden-McNeil Publishing. ISBN 978-0-7380-3819-3.
^"alum | chemical compound". Britannica.com. Archived from the original on 26 May 2015. Retrieved 18 January 2016.
^Helmenstine, Anne Marie. "What is Alum?". About.com. Archived from the original on 14 April 2013. Retrieved 19 April 2013.
^Alum Block for Shaving – When and How to use one. Archived 15 January 2020 at the Wayback Machine, Blake'n Blade Shave Shop. Last accessed 15 January 2020.
Potassiumalum, potash alum, or potassium aluminium sulfate is a chemical compound: the double sulfate of potassium and aluminium, with chemical formula...
cation such as potassium or ammonium. By itself, "alum" often refers to potassiumalum, with the formula KAl(SO 4) 2·12 H 2O. Other alums are named after...
Chrome alum or Chromium(III) potassium sulfate is the potassium double sulfate of chromium. Its chemical formula is KCr(SO4)2 and it is commonly found...
sweating. Alum (typically potassiumalum or ammonium alum, also described as "rock alum", or "rock crystal", or "natural deodorant"). Alum is a natural...
tschermigite. Ammonium alum is made from aluminium hydroxide, sulfuric acid and ammonium sulfate. It forms a solid solution with potassiumalum. Pyrolysis leaves...
universally accepted. Franz Böhmer in 1865 published a haematoxylin formula using alum as a mordant, and in 1891, Paul Mayer published a formulation using a chemical...
Potassium bitartrate, also known as potassium hydrogen tartrate, with formula KC4H5O6, is a chemical compound with a number of uses. It is the potassium...
composed of hydrated potassium aluminium sulfate (a type of alum). It is a fibrous monoclinic alum, distinct from isometric potassiumalum, named in 1868....
solution exists as K[Al(OH)4]. Potassium aluminate can be used to produce potassiumalum with sulfuric acid in this reaction. KAlO2 + 2 H2SO4 ⇌ KAl(SO4)2 + 2...
in production of other aluminium compounds. Two kinds of alum, ammonium alum and potassiumalum, were formerly used as mordants and in leather tanning,...
Potassium dichromate has few major applications, as the sodium salt is dominant industrially. The main use is as a precursor to potassium chrome alum...
bleached with benzoyl peroxide or a mixture of benzoyl peroxide with potassiumalum, calcium sulfate, and magnesium carbonate but, in that case, vitamin...
Aum-Na). Like its potassium analog, sodium aluminum sulfate crystallizes as the dodecahydrate in the classical cubic alum structure. Sodium alum is very soluble...
the following substances: 1 mg Lidocaine for local anesthesia. 1 mg potassiumalum for astringent. 1,8 mg propylparaben for desinfection. http://www.trachitol...
uraninite) Plessite (mixture of kamacite and taenite) Potassiumalum or potash alum (as a mineral, is called alum-(K)) Qingsongite Quartz Quenstedtite Quetzalcoatlite...
Aluminium sulfate is sometimes called alum or papermaker's alum in certain industries. However, the name "alum" is more commonly and properly used for...
occurrence lies appropriately above a canyon named Alum Gulch. Alunite is mined as an ore of both potassium and aluminium at Marysvale. Some of the ore deposits...
alternative treatments, including Aloe vera, Myrtus communis, Rosa damascena, potassiumalum, nicotine, polio virus vaccine and prostaglandin E2. A 2023 systematic...
chrome yellow, potassiumalum and aluminium hydroxide. The company imports industrial chemical stock including caustic soda, potassium carbonate, normal...
the ink on it to blur. Shuxuan (literally "Ripe Xuan"), however, has potassiumalum worked into it during production, which results in a stiffer texture...
the rearrangement of propylene oxide, a reaction that is catalyzed by potassiumalum at high temperature. The advantage of this method relative to the allyl...
as a laundry detergent. Some of the salt bushes produced a type of potassiumalum (Arabic: shab) that was brownish in color, having a strong alkalinity...
synthesized alum as a reaction product between sulfates of potassium and earth of alum, demonstrating that alum was a double salt. Swedish German pharmaceutical...
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