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Names | |||
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IUPAC name
Ammonia[1]
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Systematic IUPAC name
Azane | |||
Other names
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Identifiers | |||
3D model (JSmol)
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3DMet | |||
3587154 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
ECHA InfoCard | 100.028.760 | ||
EC Number |
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79 | |||
KEGG | |||
MeSH | Ammonia | ||
PubChem CID
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RTECS number |
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UNII | |||
UN number | 1005 | ||
CompTox Dashboard (EPA)
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Properties | |||
NH3 | |||
Molar mass | 17.031 g·mol−1 | ||
Appearance | Colourless gas | ||
Odor | Strong pungent odour | ||
Density |
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Melting point | −77.73 °C (−107.91 °F; 195.42 K) (Triple point at 6.060 kPa, 195.4 K) | ||
Boiling point | −33.34 °C (−28.01 °F; 239.81 K) | ||
Critical point (T, P) | 132.4 °C (405.5 K), 111.3 atm (11,280 kPa) | ||
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Solubility | soluble in chloroform, ether, ethanol, methanol | ||
Vapor pressure | 857.3 kPa | ||
Acidity (pKa) | 32.5 (−33 °C),[6] 9.24 (of ammonium) | ||
Basicity (pKb) | 4.75 | ||
Conjugate acid | Ammonium | ||
Conjugate base | Amide | ||
−18.0×10−6 cm3/mol | |||
Refractive index (nD)
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1.3327 | ||