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[Chemical Knowledge]：How to write the chemical formula of aluminum sulfate

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Aluminum sulfate is an inorganic compound with a wide range of applications. Its chemical formula is Al2(SO4)3, consisting of aluminum ions and sulfate ions. In this article, we will delve into the chemical and physical properties and uses of aluminum sulfate.

chemical properties

aluminum sulfate is a very strong acidic substance. When it reacts with water, it releases a lot of heat and dissolves quickly. Its chemical reaction formula can be expressed in the following way:

Al2(SO4)3 6H2O → 2Al(OH)3 3 H2SO4

Aluminum sulfate can react with other compounds to produce a variety of compounds. For example, aluminum sulfate can react with sodium hydroxide to generate aluminum hydroxide and sodium sulfate:

Al2(SO4)3 2NaOH → 2Al(OH)3 3 Na2SO4

Aluminum sulfate can also react with certain organic compounds and is widely used in pesticide production and other fields.

physical properties

aluminum sulfate is a colorless crystalline powder. It has a density of 2.44g/cm³ and a relative molecular mass of 342.15. Aluminum sulfate is stable at room temperature, but is susceptible to moisture and dissolution.

uses

Aluminum sulfate is an important chemical raw material, which is widely used in the following fields:

1. Paper industry: Aluminum sulfate can be used as a deinking agent, bleaching agent and filler in the paper industry.

2. Water treatment: Aluminum sulfate can be used for water treatment. As a water purifying agent, it can remove impurities and pollutants that are difficult to remove in the water.

3. Pharmaceutical Industry: Aluminum sulfate can be added to many drugs, such as anti-inflammatory drugs and antibiotics. It is widely used in the preparation of aluminium salts.

4. Metal processing: Aluminum sulfate can be used to prepare other compounds, and can also be used for metal cleaning and surface treatment.

aluminum sulfate is widely used in many fields. Its chemical and physical properties make it an indispensable substance in many industrial processes. Whether it is a paper mill, a pharmaceutical factory or a water treatment plant, aluminum sulfate plays an irreplaceable role.