Tin Granules

Tin granules is silvery grains or particles. It is stable in the air. Sn Granulars are soluble in concentrated hydrochloric acid, sulfuric acid, aqua regia, concentrated nitric acid and hot caustic solution, but not soluble in water. Tin metal ingots are the raw material. At 100℃, its ductility is very good, which is easily rolled to super thin tin foils. At range 13.2~163℃, the property of tin is most stable, which is called white tin. It is quadratic system. When temperature lower than 13.2℃, tin metal would turn into loose powder like coom. When temperature is higher than 161℃, white tin turns into  orthorhombic tin. Tin metal react with halogen to form tetrahalide when heating. It reacts sulfur to form tin sulfide. The color of tin disulfide is similiar to gold, which is used as golden pigment.