{
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      "max_abs_error": 27.114939546734377,
      "max_abs_error_units": "J/mol",
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      "max_abs_error": 62.756225501814015,
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          "type": "ResidualHelmholtzGaussian"
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      "critical_region_splines": {
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        "T_min": 126.19197283625158,
        "_note": "Coefficients for the critical cubic spline.  T = c[0]*rho^3 + c[1]*rho^2 + c[2]*rho + c[3] with rho in mol/m^3 and T in K",
        "cL": [
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      "molar_mass_units": "kg/mol",
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      "pseudo_pure": false
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  ],
  "INFO": {
    "2DPNG_URL": "http://www.chemspider.com/ImagesHandler.ashx?id=922",
    "ALIASES": [
      "nitrogen",
      "NITROGEN",
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      "R728"
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    "CAS": "7727-37-9",
    "CHEMSPIDER_ID": 922,
    "ENVIRONMENTAL": {
      "ASHRAE34": "A1",
      "FH": 0,
      "GWP100": -1.0,
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      "GWP500": -1.0,
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      "Name": "Nitrogen",
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      "PH": 0
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    "FORMULA": "N_{2}",
    "INCHI_KEY": "IJGRMHOSHXDMSA-UHFFFAOYSA-N",
    "INCHI_STRING": "InChI=1S/N2/c1-2",
    "NAME": "Nitrogen",
    "REFPROP_NAME": "NITROGEN",
    "SMILES": "N#N"
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  "STATES": {
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      "hmolar": 818.9065856240063,
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      "smolar": 118.07314411148191,
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    "triple_liquid": {
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    "triple_vapor": {
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  },
  "TRANSPORT": {
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      "BibTeX": "Lemmon-IJT-2004",
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        "T_ref": 252.384,
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        "qD": 2500000000.0,
        "type": "simplified_Olchowy_Sengers",
        "zeta0": 1.7e-10
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      "dilute": {
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        "type": "eta0_and_poly"
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      "residual": {
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        "type": "polynomial_and_exponential"
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    },
    "viscosity": {
      "BibTeX": "Lemmon-IJT-2004",
      "dilute": {
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        "molar_mass": 0.02801348,
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        "type": "collision_integral"
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      "epsilon_over_k": 98.94,
      "epsilon_over_k_units": "K",
      "higher_order": {
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        "a": [
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        "d1": [
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        "d2": [
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        "gamma": [
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        "rhomolar_reduce": 11183.9,
        "rhomolar_reduce_units": "mol/m^3",
        "t1": [
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        "t2": [
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        "type": "modified_Batschinski_Hildebrand"
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      "sigma_eta": 3.656e-10,
      "sigma_eta_units": "m"
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  }
}