Tin(II) oxide
Tin(II) oxide (stannous oxide) is a compound with the formula SnO. It is composed of tin and oxygen where tin has the oxidation state of +2. There are two forms, a stable blue-black form and a metastable red form.
| Names | |
|---|---|
| IUPAC name
Tin(II) oxide | |
| Other names
Stannous oxide Tin monoxide | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.040.439 |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| 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) |
| insoluble | |
| −19.0·10−6 cm3/mol | |
| Structure | |
| tetragonal | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
56 J·mol−1·K−1 |
Std enthalpy of formation (ΔfH⦵298) |
−285 kJ·mol−1 |
| Hazards | |
| Flash point | Non-flammable |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
none |
REL (Recommended) |
TWA 2 mg/m3 |
IDLH (Immediate danger) |
N.D. |
| Safety data sheet (SDS) | ICSC 0956 |
| Related compounds | |
Other anions |
Tin sulfide Tin selenide Tin telluride |
Other cations |
Carbon monoxide Silicon monoxide Germanium(II) oxide Lead(II) oxide |
| Tin dioxide | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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