{
  "slug": "r-450a",
  "displayName": "R-450A",
  "altSpellings": [
    "R450A",
    "450A",
    "Opteon XP10"
  ],
  "chemicalName": "Binary HFC/HFO blend",
  "chemicalFormula": "R-134a/R-1234ze(E) (42/58)",
  "ashraeNumber": "R-450A",
  "type": "hfc-blend",
  "safetyClass": "A1",
  "tradeNames": [
    {
      "name": "Opteon XP10",
      "manufacturer": "Chemours"
    }
  ],
  "composition": [
    {
      "component": "R-134a",
      "massFraction": 0.42
    },
    {
      "component": "R-1234ze(E)",
      "massFraction": 0.58
    }
  ],
  "physical": {
    "boilingPointC": -23.4,
    "boilingPointF": -10.1,
    "critical": {
      "tempC": 104.5,
      "tempF": 220.1,
      "pressurePsia": 547,
      "pressurePsig": 532,
      "pressureKpaA": 3771,
      "pressureKpaG": 3670
    },
    "molarMassGPerMol": 108.7,
    "liquidDensityKgPerM3At25C": 1196,
    "temperatureGlideF": 0.9,
    "hasSignificantGlide": false
  },
  "environmental": {
    "odp": 0,
    "gwp100Ar5": 605,
    "gwp100Ar6": 645,
    "atmosphericLifetimeYears": null,
    "snapStatus": "Listed acceptable; commercial refrigeration and chillers"
  },
  "lubricants": {
    "compatible": [
      "POE"
    ],
    "incompatible": [
      "MO"
    ],
    "notes": "POE required. Lower-GWP R-134a alternative for medium-temp commercial refrigeration, chillers, and heat pumps. Low glide (~0.5 K)."
  },
  "applications": [
    "Medium-temperature commercial refrigeration",
    "Centrifugal and screw chillers",
    "R-134a retrofit"
  ],
  "replacementOptions": [
    "r-1234yf",
    "r-513a",
    "r-516a"
  ],
  "replaces": [
    "r-134a"
  ],
  "regulatoryStatus": {
    "epaPhaseoutComplete": false,
    "epaPhaseoutDate": null,
    "aimActAffected": true,
    "snapApproved": true
  },
  "ptChart": [],
  "dataSource": {
    "ptChartSource": "Manufacturer datasheet: Chemours Opteon XP10 (R-450A) Technical Information",
    "ptChartGeneratedAt": "2026-06-05T07:54:34.403Z",
    "ptChartVerifiedAgainst": [
      "Chemours Opteon XP10 PT chart"
    ],
    "propertiesSource": "Chemours Opteon XP10 datasheet + ASHRAE Standard 34-2022",
    "gwpSource": "IPCC AR5 Table 8.A.1 (composition-weighted)",
    "dataStatus": "manufacturer-datasheet-published",
    "primarySources": [
      {
        "type": "manufacturer-datasheet",
        "citation": "The Chemours Company, Opteon XP10 (R-450A) Technical Information / Product Data Sheet.",
        "url": "https://www.opteon.com/en/products/stationary-refrigerants/xp10",
        "scope": "PT chart and properties for R-450A (R-134a/R-1234ze(E) 42/58 mass% zeotropic blend)."
      },
      {
        "type": "standards",
        "citation": "AHRI Standard 700-2019 — R-450A specification."
      }
    ]
  }
}