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What Is The Use Of Hydrochloric Acid?

May. 29, 2020

The use of Hydrochloric Acid is actually more extensive, whether it is in human or industrial use. Hydrochloric acid is a component of gastric juice that can denature proteins in food and easily hydrolyze, killing bacteria that enter the stomach. At the same time, it also helps the absorption of iron and calcium in the small intestine. It is used as an organic synthetic material in industry, and there are some applications in the bleaching and dyeing industry. Let's take a look at the four major uses of hydrochloric acid with Hydrochloric Acid Suppliers.


1. Uses of the human body

There is a special gland on the stomach wall of humans and other animals, which can turn the food salt into hydrochloric acid. Muriatic Acid is a component of gastric juice (concentration is about 0.5%), it can keep gastric juice to maintain the most suitable pH value required to activate pepsin, it can also make the protein in food denatured and easy to hydrolyze, and kill the food The role of bacteria entering the stomach. In addition, when hydrochloric acid enters the small intestine, it can promote the secretion of pancreatic juice, intestinal juice, and the secretion and discharge of bile. The acidic environment also helps the absorption of iron and calcium in the small intestine.


2. Organic Synthesis

For example, under the condition of 180℃~200℃ with mercury salt (such as HgCl2) as a catalyst, hydrogen chloride and acetylene undergo an addition reaction to form vinyl chloride, which is then polymerized to form polyvinyl chloride under the action of an initiator.

Hydrochloric Acid2

Hydrochloric Acid2

3. Bleaching and Dyeing Industry

For example, hydrochloric acid should be used for acid washing after bleaching cotton and for neutralizing residual alkali after mercerizing. In the process of printing and dyeing, some dyes are insoluble in water and need to be treated with hydrochloric acid to make them soluble hydrochloride before they can be used.


4. Metal processing

For example, in the pre-plating treatment of steel parts, first wash with caustic soda solution to remove oil stains, and then soak with hydrochloric acid; before metal welding, it is necessary to apply a little hydrochloric acid to the welding port, etc., all of which use hydrochloric acid to dissolve metal oxides. A nature to remove rust. In this way, the metal surface can be plated and welded firmly. It can also be used to dissolve with some metals (such as aluminum) to remove materials by corrosion.