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  "INFO": {
    "2DPNG_URL": "http://www.chemspider.com/ImagesHandler.ashx?id=217", 
    "ALIASES": [
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      "ammonia", 
      "R717", 
      "AMMONIA"
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    "CAS": "7664-41-7", 
    "CHEMSPIDER_ID": 217, 
    "ENVIRONMENTAL": {
      "ASHRAE34": "B2", 
      "FH": 1, 
      "GWP100": -1.0, 
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      "HH": 3, 
      "Name": "Ammonia", 
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    "FORMULA": "H_{3}N_{1}", 
    "INCHI_KEY": "QGZKDVFQNNGYKY-UHFFFAOYSA-N", 
    "INCHI_STRING": "InChI=1S/H3N/h1H3", 
    "NAME": "Ammonia", 
    "REFPROP_NAME": "AMMONIA", 
    "SMILES": "N"
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      "residual": {
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        "type": "modified_Batschinski_Hildebrand"
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      "initial_density": {
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        "t": [
          -0.0, 
          -0.5, 
          -1.0, 
          -1.5, 
          -2.0, 
          -2.5, 
          -3.0, 
          -3.5, 
          -4.0, 
          -4.5, 
          -5.0, 
          -5.5, 
          -6.0
        ], 
        "type": "Rainwater-Friend"
      }, 
      "sigma_eta": 2.957e-10, 
      "sigma_eta_units": "m"
    }
  }
}