FC-75

Last updated
FC-75
FC-75.png
Names
IUPAC name
2,2,3,3,4,4,5-heptafluoro-5-(1,1,2,2,3,3,4,4,4-nonafluorobutyl)tetrahydrofuran
Other names
Perfluorocyclic ether, Fluorinert FC-75,
Perfluoro-compound FC-75,
Perfluoro-2-n-butyl THF,
Perfluoro(butyltetrahydrofuran)
Identifiers
3D model (JSmol)
Abbreviations PFBTHF
ECHA InfoCard 100.005.809
EC Number 206-389-5
PubChem CID
Properties
C8F16O
Molar mass 416.06
Melting point −88 °C (−126 °F; 185 K)
Boiling point 102 °C (216 °F; 375 K)
Insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

FC-75 is a fluorocarbon derivative of tetrahydrofuran with the chemical formula C8F16O. It is practically insoluble in water.

Fluorocarbon

Fluorocarbons, sometimes referred to as perfluorocarbons or PFCs, are, strictly speaking, organofluorine compounds with the formula CxFy, i.e. they contain only carbon and fluorine, though the terminology is not strictly followed. Compounds with the prefix perfluoro- are hydrocarbons, including those with heteroatoms, wherein all C-H bonds have been replaced by C-F bonds. Fluorocarbons can be perfluoroalkanes, fluoroalkenes and fluoroalkynes and perfluoroaromatic compounds. Fluorocarbons and their derivatives are used as fluoropolymers, refrigerants, solvents, and anesthetics.

Tetrahydrofuran chemical compound

Tetrahydrofuran (THF) is an organic compound with the formula (CH2)4O. The compound is classified as heterocyclic compound, specifically a cyclic ether. It is a colorless, water-miscible organic liquid with low viscosity. It is mainly used as a precursor to polymers. Being polar and having a wide liquid range, THF is a versatile solvent.

It is one of the 3M Fluorinert fluids. It is used as an inert coolant fluid in electronics and other applications, and as a solvent. FC-75 can be synthesized by the same electrochemical fluorination process used to produce PFOA. [1] However, other perfluorinated ether isomers will also result.

3M American multinational conglomerate corporation

The 3M Company, formerly known as the Minnesota Mining and Manufacturing Company, is an American multinational conglomerate corporation operating in the fields of industry, worker safety, health care, and consumer goods. The company produces a variety of products, including adhesives, abrasives, laminates, passive fire protection, personal protective equipment, window films, paint protection films, dental and orthodontic products, electronic materials, medical products, car-care products, electronic circuits, healthcare software and optical films. It is based in Maplewood, Minnesota, a suburb of St. Paul.

Fluorinert is the trademarked brand name for the line of electronics coolant liquids sold commercially by 3M. It is an electrically insulating, stable fluorocarbon-based fluid, which is used in various cooling applications. It is mainly used for cooling electronics. Different molecular formulations are available with a variety of boiling points, allowing it to be used in "single-phase" applications, where it remains a liquid, or for "two-phase" applications, where the liquid boils to remove additional heat by evaporative cooling. An example of one of the compounds 3M uses is FC-72 (perfluorohexane, C6F14). Perfluorohexane is used for low-temperature heat-transfer applications due to its 56 °C (133 °F) boiling point. Another example is FC-75, perfluoro(2-butyl-tetrahydrofurane). There are 3M fluids that can handle up to 215 °C (419 °F), such as FC-70 (perfluorotripentylamine).

A coolant is a substance, typically liquid or gas, that is used to reduce or regulate the temperature of a system. An ideal coolant has high thermal capacity, low viscosity, is low-cost, non-toxic, chemically inert and neither causes nor promotes corrosion of the cooling system. Some applications also require the coolant to be an electrical insulator.

H(CH2)7COCl + HF → H(CH2)7COF + C7H16 + 2C8F16O + HCl + H2

A similar fluorocarbon-based coolant and solvent is perfluorohexane.

Perfluorohexane chemical compound

Perfluorohexane (C6F14), or tetradecafluorohexane, is a fluorocarbon. It is a derivative of hexane in which all of the hydrogen atoms are replaced by fluorine atoms. It is used in one formulation of the electronic cooling liquid/insulator Fluorinert for low-temperature applications due to its low boiling point of 56 °C and freezing point of −90 °C. It is odorless and colorless. Unlike typical hydrocarbons, the structure features a helical carbon backbone.

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2
H
6
O
. Its formula can be also written as CH
3
CH
2
OH or C
2
H
5
OH, and is often abbreviated as EtOH. Ethanol is a volatile, flammable, colorless liquid with a slight characteristic odor. It is a psychoactive substance and is the principal type of alcohol found in alcoholic drinks.

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4
O
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2,2,5,5-Tetramethyltetrahydrofuran chemical compound

In chemistry, 2,2,5,5-tetramethyltetrahydrofuran or 2,2,5,5-tetramethyloxolane is a heterocyclic compound with the formula C
8
H
16
O
, or (CH3)2(C(CH2)2OC)(CH3)2. It can be seen as derivative of tetrahydrofuran (oxolane) with two methyl groups replacing two hydrogen atoms on each of the carbon atoms in the ring that are adjacent to the oxygen. It can be seen also as a cyclic ether of 2,5-dimethylhexane, an isomer of octane. It is sometimes denoted by the abbreviations TMTHF or Me4THF.

1,2-Difluoroethane is a saturated hydrofluorocarbon containing an atom of fluorine attached to each of two carbons atoms. The formula can be written CH2FCH2F. It is an isomer of 1,1-Difluoroethane. It has a HFC name of HFC-152 with no letter suffix. When cooled to cryogenic temperatures it can have different conformers, gauche and trans. In the liquid form these are about equally abundant and easily interconvert. As a gas it is mostly the gauche form.

References

  1. Savu, P (1994). "Fluorinated Higher Carboxylic Acids". Kirk-Othmer Encyclopedia of Chemical Terminology. John Wiley & Sons, Inc. doi:10.1002/0471238961.0612211519012221.a01.