Nomenclature
CAS number: 21651-19-4
Tin monoxide; tin protoxide.
OSn; mol wt 134.71.
O 11.88%, Sn 88.12%.
SnO.
Description and references
Prepn of high purity SnO: Kwestroo, Vromans, J. Inorg. Nucl. Chem. 29, 2187
(1967). Prepn of metastable, red, orthorhombic form: Donaldson et al., J. Chem. Soc. 1961, 839.
Properties
Brownish-black powder; burns to SnO2 on heating in air. d 6.45. Insol in water or alcohol. Sol in acids, in concd sodium
or potassium hydroxide solns.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
Reducing agent; prepn of stannous salts.