Search results
Results from the WOW.Com Content Network
Potassium alum, potash alum, or potassium aluminium sulfate is a chemical compound first mentioned under various Sanskrit names in Ayurvedic medicinal texts such as charak samhita, sushrut samhita, and ashtang hridaya; is chemically defined as the double sulfate of potassium and aluminium, with chemical formula KAl(SO 4) 2.
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 ...
Potash (/ ˈ p ɒ t æ ʃ / POT-ash ... (~45.4 million tonnes K 2 O equivalent [5]) per year as of 2021, ... Approximately 10% by weight of common wood ash can be ...
Alum-(K) is a hydrous potassium aluminium sulfate mineral with formula KAl(SO 4) 2 ·12(H 2 O). It is the mineral form of potassium alum and is referred to as potassium alum in older sources. It is a member of the alum group. [2] It occurs as colorless to white, soft isometric crystals and efflorescence coatings. [3]
Alunite is a hydroxylated aluminium potassium sulfate mineral, formula K Al 3 (S O 4) 2 (OH) 6.It was first observed in the 15th century at Tolfa, near Rome, where it was mined for the manufacture of alum.
Potassium aluminate can be used to produce potassium alum with sulfuric acid in this reaction. KAlO 2 + 2 H 2 SO 4 ⇌ KAl(SO 4) 2 + 2 H 2 O. References.
This page was last edited on 16 November 2024, at 12:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The composition is approximately 59% KNO 3 : 31.6% Al : 9.4% S by weight for the reactants of the above stoichiometrically balanced equation. For best results, "German Dark" aluminum should be used, with air float sulfur, and finely ball milled pure potassium nitrate. The finished mixture should never be ball milled together.