Chaoshan traditional tin candlestick

Lead removal from tin: "The seller has too much lead, so it will melt if it is cleaned. If it is quenched in vinegar at 89 degrees, the lead will turn to ash." Acetic acid reacts with lead to produce lead acetate, and lead in tin is removed.

The English name of Stannum is Tin, and its element symbol is Sn. It is a metallic element, inorganic substance, and the common form of white tin is a low melting point metal with silvery white luster. It is divalent or tetravalent in the compound and will not be oxidized by air at room temperature. In nature, it mainly exists in the form of dioxide (cassiterite) and various sulfides (such as cassiterite). Tin is "hardware"-one of gold, silver, copper, iron and tin.

As early as ancient times, people discovered and used tin. In some ancient tombs in China, tin pots, tin candlesticks and other tin utensils are often excavated. According to research, in the Zhou Dynasty in China, the use of tin ware was very common. Tin daily necessities were also found in ancient tombs in Egypt.

Tin, a common Chinese word (a kind of word), pronounced as Xρ, a pictophonetic word, was first seen in the Spring and Autumn Period. The original meaning is metallic element, silvery white, malleable and not easy to change in air; The extended meaning includes giving favors or property, giving, tribute, etc.

Tin is an important industrial raw material, which is widely used in various manufacturing processes. Among them, tin alloy is widely used in manufacturing electronic devices, mechanical equipment, automobile parts, pipes and containers. Tin is also widely used in food packaging, printing, coatings, cosmetics and other industries, as well as medicine, biotechnology, construction and other fields.

In addition, tin has other uses. For example, in metallurgical industry, tin can be used to make welding materials, anti-corrosion coatings and so on. In agriculture, tin can be used to make pesticides, fungicides and so on. In traditional bronze ware making, tin is often used as an alloy additive to improve the hardness and corrosion resistance of bronze. Therefore, tin can be said to be a very widely used element.