Nomenclature
CAS number: 18282-10-5
White tin oxide; tin dioxide; stannic anhydride; flowers of tin.
O
2Sn; mol wt 150.71.
O 21.23%, Sn 78.77%.
SnO
2.
Description and references
Occurs in nature as the mineral cassiterite. The commercial grade is also known as polishing powder, putty powder, or tin ash. Review of toxicology and human exposure: Toxicological Profile for Tin (PB2006-100006,
2005) 426 pp.
Properties
White or slightly gray powder. d 6.95. Insol in water, alcohol, or
cold acids. Slowly sol in hot concd potassium or sodium hydroxide
soln.Caution
Potential symptoms of overexposure
are stannosis (benign pneumoconiosis); dyspnea, decreased pulmonary
function. See NIOSH Pocket Guide
to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 308.Use
Polishing glass and metals; manuf milk-colored,
ruby and alabaster glass, enamels, pottery, putty; mordant in printing
and dyeing fabrics; in fingernail polishes.