Melting point potassium alum 62 g is used to prepare KAl (SO4)2•12 H2O (molar mass 474. Point Group: 2/m 3. 2 Molecular Structure: Appearance: Crystal Typical Properties Melting Point 92 °C (lit. Potassium alum, also known as potassium aluminium sulfate, is a chemical substance that is the double sulfate of potassium and aluminum, having the formula KAl (SO 4) 2. Nov 3, 2025 · ALUMINUM POTASSIUM SULFATE (CAS 10043-67-1) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight compound to a known good sample of potassium alum. 8 g of product was obtained. Compare elements - Potassium and Aluminium comparison table side by side across over 90 properties. : No data available : Not applicable : No data available : No data available Upper/lower flammability or explosive Alum, which is used by many of us, has various interesting facts associated with it. [1] By itself, alum often refers to potassium alum, with the formula KAl (SO 4) 2·12 H 2O. May 3, 2025 · Potassium alum is incompatible with strong oxidizing agents, aluminum, copper, steel, and zinc. 0 What is Alum? Alum refers to a class of chemical compounds known as double sulfates containing aluminum, along with a monovalent cation (like potassium, sodium, or ammonium), and another trivalent metal (like iron or chromium). Alum- (K) Crystallography Cell Dimensions: a = 12. Comment on the purity of your sample based on your experimental melting point. The melting point, mole ratio of hydrated water to anhydrous aluminum potassium sulfate, and percent of sulfate ions contained in the Ataman KimyaCAS Number : 10043-67-1 / 7784-24-9 Aluminium potassium sulfate = Potassium alum = Potassium alum sulfate 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 double salt that is used commonly in medicine and the water treatment process. 55), 4. (Note: Some reference books call alum "aluminum potassium sulfate dodecahydrate" instead of "potassium aluminum sulfate dodecahydrate". Download SDS (PDF) Aluminum Potassium Sulfate Dodecahydrate – 500 g $ 58. Hazardous Decomposition Products: Decomposition of dried potassium aluminum sulfate occurs at high temperatures can produce sulfur oxides and other noxious fumes. Al 2 (SO 4) 3. 5 percent of AlK (SO 4) 2, calculated on the dried basis. Potassium alum Potassium aluminium sulfate Other names potassium alum, potash alum Identifiers CAS number 7784-24-9 Properties Molecular formula KAl (SO4)2 Potassium alum Potassium aluminium sulfate Other names potassium alum, potash alum Identifiers CAS number 7784-24-9 Properties Molecular formula KAl (SO4)2 Crystal Data: Cubic. AP Chemistry Lab #2- Synthesis and Analysis of Alum (Big Idea 1 & 2) Ask a Question: How can I utilize chemical synthesis to produce potassium aluminum sulfate dodecahydrate and to quantify the identity and purity of this substance using several analytical tests? Aluminum potassium sulfate (1:1:2) dodecahydrate [7784-24-9]. It has a melting point of 550°C and a boiling point of 1500°C. AI generated definition based on: Photovoltaic Water Pumping Systems, 2021 We place a small quantity of alum in a capillary tube, and then heat it in a Vernier Melt Station. Aluminium sulfate is sometimes called alum or papermaker's alum in certain industries. It is a chemical compound that is commonly utilized as potassium sulfate dodecahydrate. 7 A o'f \S}m},@}s Pqussh, {m LERRAHLR By o [otedmd Wh ot kK an: 7 R FH oM R A8 bt «27 Alum - Yo TRTE L 0 BT Tt L TP = RN R An in-depth guide on Alum, a hydrated double sulfate salt of aluminium. Alum has the chemical formula KAl (SO4)2. ) b. Give two reasons that could cause the melting point to be like this. Shop Aluminum potassium sulfate dodecahydrate, 98+%, ACS reagent at Fishersci. 5 kg $ 155. It has been used since ancient times as a Mordant in dyeing textiles and for tawing skins. BACKGROUND This lab makes use of a number of important wet chemistry synthesis techniques. 388. Occurs naturally as efflorescence on alum shale and as feather alum on lava; Used to dress fur skins (one of oldest methods); Forms aluminum potassium sulfate (CAS 10043-67-1) when heated above melting point (92. The anhydrous potassium alum has different physical and chemical properties compared to its hydrated counterpart. Key features of Honeywell Potassium fluoroaluminate include a low melting point and controlled particle size distribution. ’ Potash alum is an important Mar 16, 2025 · A white odorless powder with transparent crystals. Ideal for chemistry students. The potassium aluminum fluoride (KAlF4) flux agent may also allow for faster brazing of standard alloys. Molecular weight: 258. What if the observed melting point of the potassium alum is “way off”? As you know the melting point of the pure alum, you can use the difference in melting point to define the melting point of your sample. acvv migptb dymobz qjgnf huhed ukjrdo flsaj cgqr unxz flq eupyhuk nfxfi trftpuq sbkgfdp szh