{
  "ALIASES": [], 
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    "surface_tension": {
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
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  "CAS": "593-53-3", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "UNKNOWN", 
    "FH": 3, 
    "GWP100": 92.0, 
    "GWP20": 323.0, 
    "GWP500": 28.0, 
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    "Name": "R41", 
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}