Gray-green powder, melting point 231.88℃. The boiling point is 2270℃. The relative density is 7.28. Soluble in concentrated hydrochloric acid, sulfuric acid, aqua regia, concentrated nitric acid, hot caustic acid solution, slowly soluble in cold dilute hydrochloric acid, dilute nitric acid and hot dilute sulfuric acid, cold caustic acid solution, dissolve more slowly in acetic acid. Detailed Introduction
Tin Is a kind of metallic element, inorganic substance, ordinary form of white tin is a kind of silver luster of low melting point metal, in the compound is bivalent or quadruvalent, will not be oxidized by air at room temperature, in nature mainly in the form of dioxide (cassiterite) and various sulfide (such as thiocassiterite). Tin is “hardware” — one of gold, silver, copper, iron, and tin. Tin has been discovered and used since ancient times. Tin POTS and candlesticks are often found in ancient tombs in China. According to the textual research, the use of tin ware was very common during the Zhou Dynasty. Daily necessities made of tin were also found in ancient tombs in Egypt.