Carbon Dioxide (R744)

Fluid ID: CO2

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This page summarizes key data for Carbon Dioxide (R744) and links directly to FluidTool calculators prefilled for this fluid.

What you can calculate

Use the linked CoolProp calculators to move from this data sheet into live property lookup, saturation tables, and engineering charts.

Carbon Dioxide (R744) state properties: pressure, temperature, density, enthalpy, entropy, and vapor quality.
Transport and derived properties: viscosity, thermal conductivity, specific heat, Prandtl number, and speed of sound when supported by CoolProp.
Saturation and chart work: PT lookup, P-h diagrams, superheat, subcooling, and exportable calculation results.

Key data

CategoryNatural

TypePure/Pseudo-Pure

SafetyA1

GWP (100yr)—

ODP—

FormulaC_{1}O_{2}

Critical temperature304.13 K (30.98 °C)

Critical pressure7.377 MPa

Notes: safety classifications and environmental metrics can vary by source and standard. Where values are not available for a fluid, this page shows “—”. Always verify with local regulations, SDS/manufacturer guidance, and authoritative references.

Related references

Use this fluid page as a starting point, then jump into PT charts, property lookup, and related concepts.

Open Carbon Dioxide (R744) in Props Open Property Lookup Refrigerant PT chart guide Critical point GWP & ODP Saturation pressure vs temperature

References

Calculations and property correlations are powered by the open-source CoolProp library. Values shown above are derived from the CoolProp fluid database and may change between versions.