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Tin(II) oxide

chemical compound

Tin(II) oxide, also known as stannous oxide, is a chemical compound. Its chemical formula is SnO. It has tin in an oxidation state of +2. It also has oxide ions in it.

Tin(II) oxide
Names
IUPAC name
Tin(II) oxide
Other names
Stannous oxide, tin monoxide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.040.439
EC Number 244-499-5
PubChem {{{value}}}
RTECS number XQ3700000
SMILES {{{value}}}
Properties
SnO
Molar mass 134.709 g/mol
Appearance black or red powder when anhydrous, white when hydrated
Density 6.45 g/cm3
Melting point 1,080 °C (1,980 °F; 1,350 K)[1]
insoluble
−19.0·10−6 cm3/mol
Structure
tetragonal
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−285 kJ·mol−1[2]
Standard molar
entropy
So298
56 J·mol−1·K−1[2]
Hazards
Flash point Non-flammable
U.S. Permissible
exposure limit (PEL)
none
Related compounds
Other anions Tin sulfide
Tin selenide
Tin telluride
Other cations Carbon monoxide
Silicon monoxide
Germanium(II) oxide
Lead(II) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

PropertiesEdit

It is normally a blue-black solid. It can be red but the red form is more unstable. It burns in air with a green flame to make tin(IV) oxide. It is a reducing agent. It is rarer than tin(IV) oxide. It dissolves in acids to make a colorless solution.

PreparationEdit

It can be made by reacting sulfuric acid with tin and reacting the tin(II) sulfate made with sodium hydroxide to make the tin(II) oxide hydrate. This is heated to get the tin(II) oxide.

UsesEdit

It is used in touchscreens. It is used to make a glass with gold in it called ruby glass.

Related pagesEdit

ReferencesEdit

  1. Tin and Inorganic Tin Compounds: Concise International Chemical Assessment Document 65, (2005), World Health Organization
  2. 2.0 2.1 Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A23. ISBN 0-618-94690-X.