Ammonia
Chemical, Physical and Thermal Properties of Ammonia
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Chemical, physical and thermal properties of Ammonia - NH3 :
| Molecular Weight | 17.2 |
| Specific Gravity | 0.59 |
| Specific Volume (ft3/lb, m3/kg) | 23.0, 1.43 |
| Density of liquid at atmospheric pressure (lb/ft3, kg/m3) | 42.6, 686 |
| Vapor pressure at 25oC (psia, MN/m2) | 145.4, 1.0 |
| Absolute Viscosity (lbm/ft s, centipoises) | 6.72 10-6, 0.01 |
| Sound velocity in gas (m/s) | 415 |
| Specific Heat - cp - (Btu/lboF or cal/goC, J/kgK) | 0.52, 2175 |
| Specific Heat Ratio - cp/cv | 1.3 |
| Gas constant - R - (ft lb/lboR, J/kgoC) | 90.8, 488 |
| Thermal Conductivity (Btu/hr ft oF, W/moC) | 0.015, 0.026 |
| Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - (oF, oC) | -28, -33.3 |
| Latent Heat of Evaporation at boiling point (Btu/lb, J/kg) | 589.3, 1373000 |
| Freezing or Melting Point at 1 atm (oF, oC) | -107.9, -77.7 |
| Latent Heat of Fusion (Btu/lb, J/kg) | 143.0, 332300 |
| Critical Temperature (oF, oC) | 271.4, 132.5 |
| Critical Pressure (psia, MN/m2) | 1650, 11.4 |
| Critical Volume (ft3/lb, m3/kg) | 0.068, 0.00424 |
| Flammable | no |
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