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ASHRAE Number R404a
Component Name 1,1,1,2 - Trifluoroethane (R 143a)
Pentafluoroethane (R 125a)
1,1,1,2 - Tetrafluoroethane (R134a)
Chemical Formula CH3CF3
CHF2CF3
CH2FCF3
CAS Number 420-46-2
354-33-6
811-97-2
Composition 52 +/- 1 %w/w
44 +/- 2 %w/w
04 +/- 2 %w/w
 
Guaranteed Specifications
(Methods defined by the Air-Conditioning and Refrigeration Institute (ARI) Standard 700-1999)
Purity
Minimum
99.9
% w/w
Water content
Maximum
15.0
ppm w/w
Non-Condensable Gas (vapour phase)
Maximum
1.5
% v/v
High boiling residue
Maximum
0.05
% v/v
Acidity (as HCL)
Maximum
1.0
ppm w/w
Chloride
No visible turbidity
pass
-
Appearance Clear and colourless liquefied gas
 
 
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