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[Chemical Knowledge]：Properties and Uses of Sodium Persulfate

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Sodium persulfate (Na2S2O8) is an important inorganic salt, which is widely used in the field of chemical production raw materials. It has strong oxidation and stability, and can release active oxygen atoms in aqueous solution, so it is widely used in bleaching, oxidation, disinfection and other fields. This article will detail the nature and use of sodium persulfate.

the properties of 1. sodium persulfate

1. physical properties

sodium persulfate is a white crystalline powder with high purity. It is easily soluble in water, and its solubility increases with increasing temperature. Sodium persulfate has good thermal stability and is not easy to decompose, but it will gradually decompose and lose oxygen atoms at high temperature.

2. chemical properties

sodium persulfate has strong oxidation, can be reduced to sodium sulfate. In aqueous solution, sodium persulfate can dissociate into persulfate ions and sodium ions. The persulfate ions can be further dissociated into hydrogen peroxide and sulfate ions. Therefore, sodium persulfate is acidic in an aqueous solution.

In addition, sodium persulfate also has good stability, not easy to react with other substances. However, under acidic conditions, the oxidation of sodium persulfate will be enhanced, and it is easy to react with reducing substances.

Use of 2. Sodium Persulfate

1. Bleach

Sodium Persulfate can be used as a bleaching agent for the bleaching of textiles, paper and other materials. It can remove the color and stains on the surface of the material through oxidation, making the material more white and clean.

2. oxidant

sodium persulfate can be used as an oxidant in chemical production. It can oxidize some reducing substances to high valence substances, so as to realize the transformation and synthesis of substances.

3. disinfectant

sodium persulfate can be used as a disinfectant for water disinfection, surface disinfection and other fields. It can kill bacteria, viruses and other microorganisms through oxidation to ensure the hygienic quality of the product.

4. water treatment agent

sodium persulfate can be used as water treatment agent for removing iron, manganese plasma and organic pollutants in water. It can convert these substances into sediments or gases through oxidation, so as to achieve the purpose of purifying water quality.

In conclusion, sodium persulfate, as an important inorganic salt, has a wide range of uses. In the field of chemical production raw materials, it can be used as bleaching agent, oxidant, disinfectant and water treatment agent, which provides important support for chemical production.

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