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HomeProduct name list(Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

(Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

  • CAS NO.:692-49-9
  • Empirical Formula: C4H2F6
  • Molecular Weight: 164.05
  • MDL number: MFCD10565642
  • EINECS: 700-651-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-04-23 13:52:06
(Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE Structural

What is (Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE?

Description

Hexafluoro-2-butene, more specifically (Z)-1,1,1,4,4,4-hexafluoro-2-butene, is an unsaturated, highly fluorinated hydrocarbon with multiple industrial uses. It also goes by the rather bizarre commercial name 1336mzz(Z).
Hexafluoro-2-butene is used as a working fluid for organic Rankine power cycles, as a refrigerant for use in chillers, and as a foam-blowing agent. (A Rankine cycle is a construct used to evaluate the performance of steam turbine systems; “organic” refers to the use of an organic liquid with a lower boiling point than water in such a system.)
Despite the harmful properties shown in the hazard information table, the U.S. Environmental Protection Agency approved its industrial uses in 2017 under the agency’s Significant New Alternatives Policy. The driving force for this approval was hexafluoro-2-butene’s short atmospheric lifetime of 22 days that contrasts with ≈8 years for hydrofluorocarbon HFC-245fa, which has similar uses. The compound’s labile carbon–carbon double bond is the key to its short lifetime.
Another advantage of hexafluoro-2-butene is its very low 100-year global warming potential of 2 (carbon dioxide = 1) compared with 858 for HFC-245fa. It is relatively nontoxic and not flammable.
Although hexafluoro-2-butene was synthesized as early as 1952 by Robert N. Haszeldine at the University of Cambridge (UK), few of its thermodynamic and other physical properties have been published. Knowledge of hexafluoro-2-butene’s properties is important for manufacturers and users of industrial equipment, so Mark O. McLinden* at the National Institute of Standards and Technology (Boulder, CO) and Ryo Akasaka at Kyushu University (Fukuoka, Japan) undertook a comprehensive study of its properties.
The authors measured experimental data for the vapor pressure (including dew points), density, and vapor-phase sound speeds for hexafluoro-2-butene. Using these and previously reported data, they developed an equation of state based on Helmholtz free energy for the compound. The equation is valid for the temperature range 200–500 K and pressures ≤46 MPa.

The Uses of (Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

Z-1,1,1,4,4,4-Hexafluoro-2-butene is a useful compound in regards to heat transfer applications due to the stability of the carbon fluorine bond.

Properties of (Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

Boiling point: 9℃
Density  1.356
vapor pressure  60.435kPa at 20.01℃
Flash point: -21℃
storage temp.  Refrigerator
solubility  Chloroform (Sparingly), Methanol (Slightly)
form  Oil
appearance colorless liquid
color  Colourless
Stability: Very Volatile
EPA Substance Registry System 2-Butene, 1,1,1,4,4,4-hexafluoro-, (2Z)- (692-49-9)

Safety information for (Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

Computed Descriptors for (Z)-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE

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