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

2.1 Physico-chemical properties

Formula: NH ₃ .

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/mg ³ at –33.35 °C and 638.6 kg/m ^...