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R600a(iso-butane)
R600a(iso-butane)

R600a(iso-butane) 
Molecular formula C4H10 
Molecular weight 58.12 
Quality standard

Item Quality standard
Superior product First-class product
Iso-butane content (v/v),% ≥ 99.8 99.6
Content of unsaturated hydrocarbon (v/v),% ≤ 0.01 0.01
Sulphur content (mg/cm3) ≤ 0.5 1
Water content (v/v),% ≤ 0.001 0.001
Residue ml/100ml ≤ 0.005 0.01
Odor No odor No odor
Acidity (as HCL), % ≤ 0.0001 0.0001

Physical properties

Boiling point, ℃ -11.82 Critical density, g/cm3 0.221
Density (25℃), liquid, g/cm3 0.551 Evaporation potential at boiling point, kj/kg 366.5
Vapor pressure (25℃), MPa 0.498 Specific heat (liquid 25℃)kj/kg.℃ 2.38
Critical temperature, 25℃ 134.98 ODP 0
Critical pressure, 25℃ 3.66 GWP 0.1

Uses
As refrigerant. Take the place of CFC 12.
Packing
120g/220g; 130g/230g cold coal tank
5kg/30P, 6kg/30P, 10kg/50P, or 11kg/50P disposable steel cylinder
50kg/108L; 200kg/400L; 400kg/926L recycable steel cylinder