Aluminum potassium sulfate

Ca(H2P0 2- Acidic aluminum salts, such as sodium aluminum sulfate, NaAl(S0 2> potassium aluminum sulfate [10043-01-3], KA1(S0 2> ammonium aluminum sulfate, (NH A1(S0 25 aluminum sulfate, Al2(S0 2> added during the preparation of pickles and reUshes to provide the same effect (48). 

Confusion arises ia the nomenclature of alum because double salt compounds, M(I)Al(SOwhere M is ia the +1 oxidation state, have also traditionally been called alums. In particular, potassium aluminum sulfate [15007-61 -1] KAl(SOreferred to as ordinary alum or potash alum. 

Potassium Aluminum Sulfate. Potassium aluminum sulfate [7784-24-9]. KAl(SO 12H20, is a white, astringent crystal known as potassium alum, ordinary alum, or potash alum. Its formula weight is 474.39 mp 92.5 °C sp gr 1.75 and solubiUty 11.4 g per 100 mL H2O at 20°C (8). It is soluble in dilute acid and insoluble in alcohol. It dehydrates at about 200 °C to porous desiccated potassium alum [10043-67-1], KAl(SO dried or burnt alum, which has a formula weight of 258.20. 

Potassium alum is manufactured by treating bauxite with sulfuric acid and then potassium sulfate. Alternatively, aluminum sulfate is reacted with potassium sulfate, or the mineral alum stone, alunite, can be calciaed and leached with sulfuric acid. Alunite is a basic potassium aluminum sulfate... 

A certain hydrate of potassium aluminum sulfate (alum) has foe formula KA1(S04)2 - xH20. When a hydrate sample weighing 5.459 g is heated to remove all foe water, 2.583 g ofKAl(S04)2 remains. What is foe mass percent of water in foe hydrate What is x ... 

Alumet A process for extracting alumina and potassium sulfate from alunite ore (a basic hydrated potassium aluminum sulfate) involving reductive calcination and alkali leaching. Developed and piloted by the Alunite Metallurgical Company, UT, in the mid 1970s but not commercialized. See also Kalunite. 

Aluminum is the third most abundant element found in the Earths crust. It is found in concentrations of 83,200 ppm (parts-per-million) in the crust. Only the nonmetals oxygen and silicon are found in greater abundance. Aluminum oxide (Al Oj) is the fourth most abundant compound found on Earth, with a weight of 69,900 ppm. Another alum-type compound is potassium aluminum sulfate [KA1(S0 )2 12H20]. Although aluminum is not found in its free metalhc state, it is the most widely distributed metal (in compound form) on Earth. Aluminum is also the most abundant element found on the moon. 

Aluminum sulfate Al O + 3HjSO —> Alj(SO )j + SH O. This reaction treats bauxite with sulfuric acid, resulting in aluminum sulfate plus water. Aluminum sulfate is also known as alum, which acts as an astringent to stop a minor flow of blood or dry up blisters (potassium aluminum sulfate is also an alum). 

Synonyms alum, cake alum (the term alum also refers to aqueous solutions of this substance, as well as other hydrate salts containing varying number of waters of crystaUization also the term alum apphes to a whole class of sulfate double salts, such as potassium aluminum sulfate or ammonium aluminum... 

POTASSIUM ALUMINUM SULFATE KA](SO,) 12RO alum, potassium alum Drug store... 

Potassium aluminum sulfate (Alum) A1K(S04)2 12H20 The aqueous immunogen solution/suspension is mixed with 0 3 vol 10% aluminum. The pH is then adjusted to about 8.0 with sodium hydroxide solution, and the resultant precipitate washed in 0 9% NaCl solution and administered... 

In Activity 3.4, paper is made in a basic solution. For paper in which wood fibers are used, NaOH (sodium hydroxide) can make the pulp mixture basic by providing an excess of OH" ions. The NaOH breaks down cellulose fibers in the wood and other plant materials that form the primary paper structure. A suspension of these fibers can be placed on fabric on an embroidery hoop. Also, CIO- ions can act as oxidizing agents in the basic solution. Finally, KA1(S04)2 12H20 (potassium aluminum sulfate Alum) is added to the cellulose fibers to coagulate the pulp (clay is added when it is not naturally present). The aluminum ion (Al3+) helps the clay loosely bond to the cellulose fibers so that the resulting paper is dense and smooth. 

Styrofoam balls (13 V -in.-diameter balls and 54 2-in.-diameter balls per student or group) toothpicks 230 g sucrose (C12H220n—enough for an entire class) NaCl (sodium chloride) hand magnifying lens 250 ml beaker, 11 flask about 15 g KA1(S04) 12H20 (potassium aluminum sulfate alum) petri dishes paper and pencil distilled water spatula. 

B. Prepare a molecular crystalline solid (choose one preparation, either potassium aluminum sulfate or sucrose) ... 

Preparation of alum ( potassium aluminum sulfate) crystals ... 

Synonyms Alum, Alum flour, Alum meal, Aluminite, Aluminum and potassium sulfate, Common alum, Cube alum, Double sulfate of aluminum and potassium, Octahedral alum salt, Potash alum, Potassic-aluminic sulfate, Potassium-aluminum sulfate, Roman alum, Sulfate of aluminum and potassium. 

Issa et al. [9] used various metal ions for the volumetric determination of mefenamic acid. Mefenamic acid was precipitated from its neutral alcoholic solution by a standard solution of either silver nitrate, mercurous acetate, or potassium aluminum sulfate. In the argentimetric procedure, residual Ag(I) was titrated with standard NH4SCN. With Hg(OAc)2 or potash alum, the residual metal was determined by adding EDTA and conducting back titration of excess of EDTA with standard Pb(N03)2 using xylenol orange indicator. The applied methods were used for the determination in bulk drug substance, and in its formulations. 

Like many elements, aluminum s name derives from the Latin because the Roman Empire used two of its naturally occurring minerals, alum (a potassium-aluminum sulfate) and alumina (aluminum oxide). It was isolated in 1825 by H. C. Oersted after decades of suspicion that it existed. 

KA1(S04)2-12H20 potassium aluminum sulfate dodecahydrate (alum)... 

There are a number of mineral and metallic salts which have a long association with the alchemical art. The fifteenth century alchemist, Isaac Holland describes The Hand of the Philosophers as being an assembly of important salts in alchemical works. These salts include Niter (potassium nitrate), Sal Ammoniac (ammonium chloride), Vitriol (copper or iron sulfate), Alum (potassium aluminum sulfate), and common salt (sodium chloride). 

Gather these materials Powdered potassium aluminum sulfate (A12(S04)3. K2S04) a small amount of clay some sand 2 funnels filter paper an upright stand and 2 ring supports and 4 pint jars. 

Follow this procedure Arrange the stand, ring supports, and funnels lined with filter paper as shown in the diagram. Put about 1 inch of sand in each of the funnels. Mix 2/3 of a cupful of water and 2 teaspoonfuls of clay in one jar. Make a similar mixture in the other jar, but add also 2 teaspoonfuls of potassium aluminum sulfate. Stir both mixtures. Pour each mixture through a different funnel into clean pint jars. Compare the liquids that you catch in the pint jars. 

Results The potassium aluminum sulfate made the small particles of clay stick together so that they filtered out as if they were much larger. The particles in the liquid without the potassium aluminum sulfate got through the filter much more easily. In places where the water passes through a clayey type of soil, the water department uses this process. 

Gather these materials Sodium chloride (NaCl) talcum powder copper sulfate (CuS04) garden soil sucrose (C H On) potassium aluminum sulfate (A12(S04)3.K2S04) 5 pieces of filter paper 5 homemade funnels or 1 regular funnel 10 test tubes a test tube rack some warm water and an alcohol burner. 

Follow this procedure Label 5 test tubes 1 to 5 or label their places in the test tube rack. Fill these 5 test tubes halfway with warm water. Put teaspoonful of sodium chloride into the first test tube, i teaspoonful of talcum powder into the second, and so on, for the next three substances. Do not use the potassium aluminum sulfate yet. If the substance doesn t dissolve right away, heat the test tube over the alcohol burner until it does, or until you are sure it won t. Make out a data sheet similar to this one ... 

Results Sodium chloride, sucrose, and copper sulfate pass easily through the filter paper. You can tell that they make true solutions because they leave no residue in the funnel. The filtering separated out the particles of talcum and garden soil. They were not true solutions, therefore. After adding potassium aluminum sulfate and refiltering the water that contained them, even the finer particles of soil, which went through the first time, separated out. 

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