Stannic oxide is derived from tin. Widely known and used, tin comprises about 0.001 percent of the earth's crust. This colourless, diamagnetic solid is amphoteric. It is sometimes found alone, but generally is found as the oxide in the mineral cassiterite. It crystallises with the rutile structure, wherein the tin atoms are six coordinate and the oxygen atoms three coordinate. Tin mines exist in England, Spain, Indonesia, Thailand, Zaire, Nigeria and China. Significant amounts of tin is also obtained through recycling. Stannic Oxide appears like a white to light gray powder.
Tin is nontoxic, ductile, malleable, adheres to various metals and has a relatively low melting point. These properties lend to its usefulness as a rust-proofing material on iron, low-grade steels, copper, and copper alloys. Molecular Formula is SnO2. tin oxide, SnO2, produced artificially as a white amorphous powder, and occurring naturally in the mineral cassiterite. It is used in the manufacture of white enamels, and, under the name of putty powder, for polishing glass, etc.
Stannic Oxide is most commonly used in glazes where it acts as an opacifier where it is typically added in the range of 5-10%. When used correctly it will produce an opaque, glossy glaze. If used in excess a dull/matt glaze can result. Potters have used tin oxide as an opacifier for hundreds of years. CAS No. 18282-10-5. It is also used for making ceramics, enamelware and glasses industry. stannous oxide (SnO) employed in making tin salts for chemical reagents and for plating; and stannous fluoride (SnF2) is the additive in fluoride tooth-pastes.
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In sealed iron drums 50kg net.
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