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Substance Name: 1,1-Difluoroethene
RN: 75-38-7
UNII: 3C1IX2905B

Molecular Formula

  • C2-H2-F2

Molecular Weight

  • 64.0338

Classification Codes

Classification Codes

  • Mutation Data
  • Tumor Data

Superlist Classification Codes

  • Overall Carcinogenic Evaluation: Group 3
  • TWA 500 ppm; Not classifiable as a human carcinogen
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Names and Synonyms

Name of Substance

  • 1,1-Difluoroethene
  • 1,1-Difluoroethylene


  • 1,1-Difluoroethene
  • 1,1-Difluoroethylene
  • CCRIS 6744
  • EC 200-867-7
  • EINECS 200-867-7
  • Ethene, 1,1-difluoro-
  • Ethylene, 1,1-difluoro-
  • Genetron 1132a
  • Halocarbon 1132A
  • HSDB 5206
  • NCI-C60204
  • NCI-C60208
  • UNII-3C1IX2905B
  • VDF
  • Vinylidene difluoride
  • Vinylidene fluoride

Systematic Names

  • 1,1-Difluoroethylene
  • Ethene, 1,1-difluoro-
  • Ethylene, 1,1-difluoro-
  • Vinylidene fluoride

Superlist Names

  • 1,1-Difluoroethylene or Refrigerant gas R 1132a
  • 1,1-Difluoroethylene or Refrigerant gas R 1132a [UN1959] [Flammable gas]
  • Ethene, 1,1-difluoro-
  • Ethylene, 1,1-difluoro-
  • UN1959
  • Vinylidene fluoride

Registry Numbers

CAS Registry Number

  • 75-38-7


  • 3C1IX2905B

Other Registry Number

  • 1272398-81-8

System Generated Number

  • 0000075387

Structure Descriptors








Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LCLo inhalation 800ppb/4H (0.8ppm)   National Technical Information Service. Vol. OTS0523847,
rat LCLo inhalation 128000ppm/4H (128000ppm) LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES Journal of Occupational Medicine. Vol. 4, Pg. 262, 1962.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point -1.44E+02 deg C   EXP
Boiling Point -8.57E+01 deg C   EXP
log P (octanol-water) 1.24 (none)   EXP
Water Solubility 1.26E+04 mg/L 25 EXP
Vapor Pressure 3.00E+04 mm Hg 25 EXP
Henry's Law Constant 0.356 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 2.10E-12 cm3/molecule-sec 23 EXP

Physical property data is provided to ChemIDplus by SRC, Inc.