NH3 product data sheet (n°CAS : 1336-21-6)
Ammonia

Formula: NH₃.

Molecular mass: 17.032.

Under ambient conditions: colorless gas, very pungent odor.

Normal boiling temperature: –33.35°C (239.8 K).

Freezing temperature: –77.7°C (195.45K).

Vapour pressure :

• 0.43 MPa at 0 °C ;

• 0.858 MPa at 20 °C ;

• 2.035 MPa at 50°C.

Density

• of the liquid: 682.0 kg/mg³ at –33.35 °C and 638.6 kg/m³ at 0 °C ;

• saturation vapour: 0.86 kg/m³ at –33.35°C and 3.06 kg/m³ at 0°C.

Liquid viscosity at 20°C: 0.155 cP (0.155 mPa.s).

Critical temperature: 132.4°C (405.5K).

Critical pressure: 11.25 MPa.