What is the difference between antimony trioxide and antimony oxide powder

Antimony trioxide is also called antimony white, and antimony oxide powder is also called powdered antimony oxide ore. In terms of fineness: Antimony trioxide (Sb2O3) is smelted into antimony ingots on the basis of antimony oxide powder and then crushed and smelted again, so it is finer than antimony oxide powder in terms of fineness. In terms of whiteness: Because the antimony trioxide (Sb2O3) extracts impurities such as lead, arsenic and sulfur on the basis of antimony oxide powder, the whiteness is higher than that of antimony oxide powder. At room temperature, the antimony oxide powder is off-white, and it has been smelted in the second The antimony trioxide is pure white, and the whiteness of the two substances is obviously different. Under the provisions of international indicators, the content of antimony trioxide (Sb2O3) cannot be less than 99%, that is, the content of antimony (Sb) cannot be less than 85%. Under normal circumstances, the content of antimony trioxide (Sb2O3) is based on the content of Sb2O3. Identify the grade, and antimony oxide is based on the Sb content to identify the grade.