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CAS No 75-10-5 , difluoromethane

  • Name: difluoromethane
  • Synonyms: Methane; Freon 32; Methylene fluoride; Methylene difluoride; difluoro-;difluoromethane; Genetron 32; Carbon fluoride hydride; R 32 (refrigerant);
  • CAS Registry Number:
  • Transport: UN 3252
  • Melting Point: -136 ºC
  • Flash Point: -89
  • Boiling Point: -51.7 ºC
  • Density: 1.10
  • Refractive index: 1.195
  • Safety Statements: R11
  • Hazard Symbols: F: Flammable;
  • Flash Point: -89
  • EINECS: 200-839-4
  • Molecular Weight: 52.023386
  • InchiKey: RWRIWBAIICGTTQ-UHFFFAOYSA-N
  • InChI: InChI=1S/CH2F2/c2-1-3/h1H2
  • Risk Statements: S9;S16;S33
  • Molecular Formula: CH2F2
  • Molecular Structure:CAS No:75-10-5 difluoromethane
References of difluoromethane
Title: Difluoromethane
CAS Registry Number: 75-10-5
Synonyms: HFC-32; methylene difluoride; R-32
Trademarks: Genetron 32 (Honeywell)
Molecular Formula: CH2F2
Molecular Weight: 52.02
Percent Composition: C 23.09%, H 3.88%, F 73.04%
Literature References: Hydrofluorocarbon refrigerant with zero ozone-depletion potential. Prepn: A. L. Henne, J. Am. Chem. Soc. 59, 1400 (1937). Structural studies: L. O. Brockway, J. Phys. Chem. 41, 185, 747 (1937); W. C. Hamilton, K. Hedberg, J. Am. Chem. Soc. 75, 5529 (1952). Microwave spectrum: D. R. Lide, Jr., ibid. 74, 3548 (1952). UV absorption spectrum: P. Wagner, A. B. F. Duncan, ibid. 77, 2609 (1955). Thermodynamic properties: P. F. Malbrunot et al., J. Chem. Eng. Data 13, 16 (1968); D. R. Defibaugh et al., ibid. 39, 333 (1994). Viscosity study: M. Takahashi et al., ibid. 40, 900 (1995). Toxicology and metabolism in rats: M. K. Ellis et al., Fundam. Appl. Toxicol. 31, 243 (1996).
Properties: Colorless gas, bp -51.6°. mp -136°. d0 (liq) 1.052. d25 (liq) 0.961. Critical temp 78.4°; critical press 57.54 atm; critical d 0.430. Dipole moment 1.98 D.
Melting point: mp -136°
Boiling point: bp -51.6°
Density: d0 (liq) 1.052; d25 (liq) 0.961; d 0.430
Use: Refrigerant.