Ammonia

• Catalog No.: Ammonia
• CAS Number: 7664-41-7
• M. F.: H3N
• M. W.: 17.03052

SYNONYMS

• IUPAC name: ammonia
• IUPAC Traditional name: ammonia
• Synonyms: Trihydrogen nitride; Nitro-Sil; Hydrogen nitride

DATABASE IDS

• Unique Ingredient Identifier: 5138Q19F1X
• KEGG ID: D02916
• PubChem CID: 222
• Wikipedia Title: Ammonia
• CAS Number: 7664-41-7
• Beilstein Number: 3587154
• CHEMBL: 1160819
• Chemspider ID: 217
• Gmelin ID: 79
• CHEBI ID: 16134
• MeSH Name: Ammonia
• EC Number: 231-635-3

PROPERTIES

• GHS Hazard statements: 221, 280, 314, 331, 400
• GHS Precautionary statements: 210, 261, 273, 280, 305+351+338, 310
• Explode Limits: 15–28%
• European Hazard Symbols: Toxic (T)
• European Hazard Symbols: Corrosive (C)
• European Hazard Symbols: Dangerous for the environment (N)
• NFPA704:
  

  1

  3

  0
• Permissible exposure limit: 50 ppm (25 ppm ACGIH- TLV; 35 ppm STEL)
• Risk Statements: R10, R23, R34, R50
• RTECS: BO0875000
• Safety Statements: S1/2, S9, S16, S26, S36/37/39, S45, S61
• UN Number: 1005
• EU Index: 007-001-00-5 (anhydrous); 007-001-01-2 (solutions)
• Density: 0.86 kg/m^3 (1.013 bar at boiling point); 0.73 kg/m^3 (1.013 bar at 15 °C); 681.9 kg/m^3 at -33.3 °C (liquid); 817 kg/m^3 at -80 °C (transparent solid)
• Auto Ignition Point: 651 °C
• pKb: 4.75
• Boiling Point: -33.34°C
• Std enthalpy of formation: -46 kJ·mol^-1
• Flash Point: flammable gas (see text)
• Melting Point: -77.73°C
• Std molar entropy: 193 J·mol^-1·K^-1
• Solubility: 47% (0 °C); 31% (25 °C); 28% (50 °C) in water
• pKa: 32.5 (-33 °C), 10.5 (DMSO)
• Apperance: Colourless gas with strong pungent odour