Ammonia (data page)

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.

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)