Tin(II) oxide

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Tin(II) oxide
IUPAC name
Tin(II) oxide
Other names
Stannous oxide, tin monoxide
3D model (JSmol)
ECHA InfoCard 100.040.439
EC Number
  • 244-499-5
RTECS number
  • XQ3700000
  • O=[Sn]
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]
−19.0·10−6 cm3/mol
Std enthalpy of
−285 kJ·mol−1[2]
Standard molar
56 J·mol−1·K−1[2]
Flash point Non-flammable
U.S. Permissible
exposure limit (PEL)
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

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.

Properties[change | change source]

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.

Preparation[change | change source]

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.

Uses[change | change source]

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

Related pages[change | change source]

References[change | change source]

  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 978-0-618-94690-7.