aluminum soap component analysis of some of the key

Aluminum sulfate: white shiny crystals, granules or powder. Sweet. Stable in air. 86.5 ℃ when the loss of part of the crystal water, 250 ℃ lose all crystal water. Violently expanding when heated and become a sponge-like material. Thermal decomposition of red burn sulfur trioxide and aluminum oxide. When the relative humidity of about 25% lower weathering. Soluble in water, practically insoluble in ethanol, the solution is acidic. Long after boiling insoluble basic salt precipitation. The relative density of 1.62. Aluminum sulfate is a widely used industrial reagent, usually yellow iron oxide  with alum (potassium aluminum sulfate dodecahydrate both) confusion. Aluminum sulfate is often used as flocculant for purifying drinking water and wastewater treatment equipment which is also used in the paper industry. Aluminum sulfate application: 1. Papermaking industry as paper sizing agent to enhance water-resistant paper, anti-seepage performance; 2 dissolved in water to make the water and natural rubber fine particles agglomerate into large floc was thus removed from water, the coagulant for water and wastewater; 3 as turbidity purification, also used as a precipitating agent, fixing agent, fillers and iron oxide black  the like. Used in cosmetic antiperspirant cosmetic ingredients (astringent); 4 Fire industry, and baking soda, composed of foam blowing agents; 5. Analytical reagents, mordant, tanning agents, oil bleaching agent, wood preservative agents; 6 pasteurized albumin stabilizer (including liquid or frozen whole eggs, egg yolk protein or); 7 can be used for raw material for the manufacture of artificial stones and advanced ammonium alum, aluminates other; 8. fuel industry , in the production of chrome yellow and color lakes made the  plastic processing aid precipitating agent, and a filler while underway fixing role. Preparation of aluminum sulfate: pressurized by the bauxite and sulfuric acid reaction. Or sulfuric acid decomposition alunite, kaolin and alumina containing silicon material can be obtained. Aluminum sulfate can also be aluminum hydroxide (Al (OH) 3) into sulfuric acid (H2SO4) is prepared. 2Al (OH) 3 + 3H2SO4 + 10H2O → Al2 (SO4) 3.16 H2O 1. Crystallized from the resulting acidic solution of aluminum sulfate hydrate crystals slowly heated, it gradually dehydrated, and finally the temperature was raised to 350 ℃, is completely Dehydration as anhydrous aluminum sulfate; 2 sulfuric acid method: pulverized to a particle size of bauxite, the addition of sulfuric acid to the reaction vessel and the reaction solution after sedimentation, the supernatant adding sulfuric acid to neutral or slightly alkaline, and then concentrated to about 115 ℃, solidified by cooling, crushing prepared products.