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[Chemical Knowledge]：Properties and Uses of Ferric Chloride

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Ferric chloride is an important raw material for chemical production, which has a wide range of properties and uses. This paper will introduce the properties, preparation methods, uses and safety measures of ferric chloride in detail.

1. the nature of ferric chloride

ferric chloride (Ferric Chloride) is an inorganic compound, chemical formula FeCl3, showing a yellow or yellow-green crystalline powder, with strong hygroscopicity. It is readily soluble in water and can form an acidic solution. The melting point of ferric chloride is low, about 282 ℃, and the boiling point is high, 315 ℃.

2. the use of ferric chloride

1. water purification agent: ferric chloride can be used as a water purification agent, used to remove suspended solids and colloidal substances in water. It hydrolyzes to generate ferric hydroxide flocculent precipitate in the water treatment process, and removes impurities in the water by adsorption and bridging.
2. Catalyst: ferric chloride can be used as a catalyst for organic synthesis reactions, redox reactions, etc. It can promote the reaction and improve the selectivity of the product.
3. preservatives: ferric chloride has certain antibacterial properties, can be used as a preservative for food, leather and other industries preservation and corrosion.
4. Printed circuit boards: Ferric chloride solution can be used to make printed circuit boards by etching the copper layer to form the required lines. The preparation method of

3. ferric chloride

ferric chloride has many preparation methods, including hydrochloric acid method, chlorine gas method and so on. Among them, the hydrochloric acid method is one of the more commonly used preparation methods, mainly to react iron filings with hydrochloric acid to generate ferrous chloride and hydrogen, and then oxidize ferrous chloride to ferric chloride.
Precautions for storage and use of
4. ferric chloride

1. Storage: Ferric chloride should be stored in a dry, cool, well-ventilated place, avoiding direct sunlight and high temperature.
2. use: in the use of ferric chloride, should pay attention to avoid contact with the skin, eyes, etc., if accidentally contact, should immediately rinse with water. At the same time, should avoid mixing with reducing agents, alkali and other substances.

5. safety measures

should take the following safety measures in the process of using ferric chloride:

1. Wear protective equipment: the operator should wear protective gloves, goggles and other protective equipment to avoid direct contact with ferric chloride.
2. Ventilation: Ventilation facilities should be set up in the operating place to maintain air circulation and reduce the concentration of ferric chloride vapor.
3. Emergency rescue: the operation site should be equipped with first-aid drugs and equipment to deal with the occurrence of accidents.

In conclusion, ferric chloride, as an important raw material for the production of chemicals, has a wide range of properties and uses. In the process of use, we should understand its nature and precautions, and take corresponding safety measures to ensure the smooth progress of the production process.

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