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[Chemical Knowledge]：Properties and Uses of Concentrated Sulfuric Acid

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The nature and use
of concentrated sulfuric acid in the field of raw materials for chemical production
1. Introduction

Concentrated sulfuric acid is a strong acid with high corrosive and oxidizing properties and is widely used in the field of raw materials for chemical production. This article will introduce the nature and use of concentrated sulfuric acid in detail, so that readers can better understand and master this important chemical raw material.

2. the nature of concentrated sulfuric acid

1. physical properties: concentrated sulfuric acid is a colorless oily liquid, with high boiling point, high viscosity, strong corrosion and other characteristics. It is not volatile and can absorb moisture in the air, so it is often used as a desiccant.
2. Chemical properties: Concentrated sulfuric acid has strong oxidation and dehydration, and can react with many metals, non-metals and compounds. At the same time, it also has a strong acidity, can ionize a large number of hydrogen ions.

3. the use of concentrated sulfuric acid

1. chemical production: concentrated sulfuric acid in chemical production is widely used as a catalyst, dehydrating agent and oxidant. For example, it can be used to produce nitrogen fertilizer, phosphate fertilizer, potash fertilizer and other chemical products such as ammonium sulfate and magnesium sulfate.
2. Metal smelting: Concentrated sulfuric acid can be used to extract metals, such as copper, zinc, cadmium, etc. It is reduced to the corresponding metal by reaction with the metal oxide.
3. Petroleum processing: Concentrated sulfuric acid is used as a catalyst in petroleum processing to promote the cracking and reforming of hydrocarbons to improve the quality of gasoline, diesel and other products.
4. Dye and pigment manufacturing: Concentrated sulfuric acid is used to manufacture many dyes and pigments, such as phthalocyanine blue, permanent violet, etc.
5. Pharmaceutical manufacturing: Concentrated sulfuric acid is used as a raw material or catalyst for synthetic drugs in pharmaceutical manufacturing, such as aspirin, vitamin B1 and other drugs.
Precautions for
4.

Because concentrated sulfuric acid is highly corrosive and oxidizing, special attention should be paid to safety when using it. Operators should wear protective clothing and gloves to avoid contact with skin. In addition, concentrated sulfuric acid should be stored in a cool and ventilated place, away from fire and heat sources.

5. conclusion

concentrated sulfuric acid has a wide range of applications in the field of chemical production raw materials, understanding and mastering its properties and uses is of great significance to improve chemical production efficiency and product quality. In the process of use, special attention should be paid to safety to avoid harm to human body and environment.

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