Tags: Chemical Compound, Chemical Substance.
Tin dioxide also known by the systematic name tin(IV) oxide and stannic oxide in the older notation is the inorganic compound with the formula SnO2. The mineral form of SnO2 is called cassiterite and this is the main ore of tin. With many other names (see infobox) this oxide of tin is the most important raw material in tin chemistry. This colourless diamagnetic solid is amphoteric.