Industrial salt is widely used in industry and is one of the most basic raw materials in chemical industry. It is called 'the mother of chemical industry'. Hydrochloric acid, caustic soda, soda ash, ammonium chloride and chlorine gas in the main products of basic chemical industry are mainly produced from industrial salts.

Industrial salt refers to raw salt, which is divided into Lake salt, well salt and sea salt. Because seawater in sea salt dissolves many elements, the industrial value of sea salt is relatively higher and the edible value is lower.

Matters needing attention

Industrial salt can be packaged or packed in bulk when it leaves the factory. Packaged products should be marked with product name, specifications, trademarks, grades, production units and the number of this standard. Shield should be provided when transporting, and should not be mixed with goods that can lead to contamination of products. Products should be stored to prevent dust and other debris pollution, prevent rain.

In the chemical industry, raw and processed salts are widely used as raw materials to produce chlorine, bleaching powder, caustic soda and sodium carbonate.

Chemical products such as soda are made use of chlorine and sodium, the main components of salt. 'Salt' for food and 'salt' for industrial use are the same chemical composition, but with different uses. Because raw salt is the product of nature, refined salt is also the simple processing of raw salt. Besides sodium chloride, it contains many impurities, so it can not be called sodium chloride. Instead, it is conventionally called 'salt', which is mainly composed of sodium chloride, such as raw salt, sea salt, well salt, rock salt, iodized salt, non-iodized salt, refined salt, large salt and powder. Crushing salt, washing salt, etc. If it is a salt of other chemical composition, it is necessary to name its specific commodity name or chemical name, such as soda, baking soda, jarosite, ammonium sulfate, potassium nitrate, potassium chloride, diammonium hydrogen phosphate and so on. It must not be called 'industrial salt' in general. I don't know when the name 'industrial salt' came into being. My analysis derives from the concept of salt monopoly. From the program of May 9, we can see that the old salt industry base like Zigong also calls its refined salt 'industrial salt'. This statement has two negative effects. One is that, as TV says, 'industrial salt' is sulfate and nitrate. The other is more harmful, which leads to frequent accidental ingestion of toxic salts, resulting in food poisoning in groups. The reason is that cooks in many places, mostly migrant workers, think that 'industrial salt' and 'edible salt' are only differences in quality. When there is no salt in the kitchen, they take what they think is salt (often sodium nitrite) and cause catastrophe. Therefore, the formulation of industrial salt must be abandoned, otherwise it will cause endless harm.