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[Chemical Knowledge]：Properties and Uses of Aluminum Sulfate

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The nature and use
of aluminum sulfate in the field of chemical production raw materials
1. Introduction

Aluminum sulfate is an inorganic salt, widely used in chemical industry, papermaking, water treatment, medicine, food and other fields. As a raw material for chemical production, aluminum sulfate has many unique properties and uses. This article will detail the properties of aluminum sulfate and its application in the field of chemical production raw materials.

2. the nature of aluminum sulfate

1. physical properties: aluminum sulfate is colorless crystal or white powder, strong acid, soluble in water, insoluble in ethanol. Its aqueous solution is acidic and red to litmus paper.
2. chemical properties: aluminum sulfate in aqueous solution will be hydrolyzed to generate aluminum hydroxide and sulfuric acid, so it has strong acidity. In addition, aluminum sulfate has good thermal stability and is not easy to decompose.

3. The use of aluminum sulfate

1. Paper industry: Aluminum sulfate is mainly used as a sizing agent in the paper industry, which can increase the water resistance and strength of paper and improve the quality of paper. In addition, aluminum sulfate can also be used as a filler and reinforcing agent for paper.
2. Water treatment agent: Aluminum sulfate can be used as a water treatment agent for purifying drinking water and industrial water. After aluminum sulfate is added to the water, flocs can be formed to adsorb suspended solids and colloidal substances in the water, so that the water becomes clear and transparent.
3. pharmaceutical intermediates: aluminum sulfate can be used as pharmaceutical intermediates for the production of antacid drugs, hemostatic drugs and other drugs. In addition, aluminum sulfate can also be used to treat skin ulcers, hemorrhoids and other diseases.
4. Food additives: Aluminum sulfate can be used as a food additive for making pasta, pastries and other foods, which can increase the taste and elasticity of food.

4. conclusion

aluminum sulfate as an important chemical raw material, has a wide range of uses and unique properties. It has been widely used in the paper industry, water treatment agent, pharmaceutical intermediates and food additives. Understanding the nature and use of aluminum sulfate can better play its role in chemical production and improve production efficiency and product quality.

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