Difluoromethane

• Formula: CH₂F₂
• Molecular weight: 52.0234
• IUPAC Standard InChI: InChI=1S/CH2F2/c2-1-3/h1H2 Copy

  
• IUPAC Standard InChIKey: RWRIWBAIICGTTQ-UHFFFAOYSA-N Copy
• CAS Registry Number: 75-10-5
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: Freon 32; Methane, difluoro-; Methylene fluoride; Carbon fluoride hydride; Genetron 32; Methylene difluoride; CH2F2; R 32; HFC 32; R 32 (refrigerant)
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• Information on this page:
  • Critical temperature
  • References
  • Notes
• Other data available:
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  • Gas Chromatography
  • Fluid Properties
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Critical temperature

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director

References

Go To: Top, Critical temperature, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Shi, Zhu, et al., 1998
Shi, L.; Zhu, M.; Han, L.; Duan, Y.; Sun, L.; Fu, Y.-D., Thermophysical Properties of Difluoromethane (HFC-32), Science in China, Ser. E, 1998, 41, 435-42. [all data]

Yata, Hori, et al., 1996
Yata, J.; Hori, M.; Kawakatsu, H.; Minamiyama, T., Measurements of refractive index of alternative refrigerants, Int. J. Thermophys., 1996, 17, 65-74. [all data]

Fu, Han, et al., 1995
Fu, Y.D.; Han, L.-Z.; Zhu, M.-S., PVT properties, vapor pressures and critical parameters of HFC-32, Fluid Phase Equilib., 1995, 111, 273-86. [all data]

Higashi, 1995
Higashi, Y., Vapor-liquid equilibrium, coexistence curve, and critical locus for binary HFC-32/HFC-134a mixture, Int. J. Thermophys., 1995, 16, 1175-84. [all data]

Kuwabara, Aoyama, et al., 1995
Kuwabara, S.; Aoyama, H.; Sato, H.; Watanabe, K., Vapor-liquid coexistence curves in the critical region and the critical temperatures and densities of difluoromethane and pentafluoroehtane, J. Chem. Eng. Data, 1995, 40, 112-116. [all data]

Higashi, 1994
Higashi, Y., Critical parameters for HFC134a, HFC32 and HFC125, Int. J. Refrig., 1994, 17, 524-531. [all data]

Notes

Go To: Top, Critical temperature, References

• Symbols used in this document:
  

  Tc	Critical temperature

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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