This page provides supplementary chemical data on ammonia.
Structure and properties
Thermodynamic properties
Vapor–liquid equilibrium data
Table data (above) obtained from CRC Handbook of Chemistry and Physics 44th ed. The (s) notation indicates equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid.
Vapor-pressure formula for ammonia:
log10P = A – B / (T − C), where P is pressure in kPa, and T is temperature in kelvins;
A = 6.67956, B = 1002.711, C = 25.215 for T = 190 K through 333 K.
Heat capacity of liquid and vapor
Spectral data
Regulatory data
Safety data sheet
The handling of this chemical may incur notable safety precautions... It is highly recommend that you seek the Safety Data Sheet (SDS) for this chemical from a reliable source and follow its directions.
SIRI Science Stuff (Ammonia Solution)
References Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD)
External links Phase diagram for ammonia IR spectrum (from NIST)