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Krytox is a registered
trademark A trademark (also written trade mark or trade-mark) is a type of intellectual property consisting of a recognizable sign, design, or expression that identifies products or services from a particular source and distinguishes them from oth ...
of
The Chemours Company Chemours (, ) is an American chemical company that was founded in July 2015 as a spin-off from DuPont DuPont de Nemours, Inc., commonly shortened to DuPont, is an American multinational chemical company first formed in 1802 by French-Amer ...
. It refers to a group of colourless synthetic lubricants ( oils and greases) with a variety of applications. Invented by researchers at DuPont, Krytox oils are fluorocarbon ether polymers of poly hexafluoropropylene oxide, with a chemical formula: F−(CF(CF3)−CF2−O)''n''−CF2CF3, where the degree of polymerization, n, generally lies within the range of 10 to 60. DuPont Krytox Performance Lubricants Product Overview, available onlin
here
These compounds are collectively known by many names including perfluoropolyether (PFPE), perfluoroalkylether (PFAE) and perfluoropolyalkylether (PFPAE). A unique identifier is their CAS registry number, 60164-51-4. In addition to PFPE, Krytox grease also contains telomers of PTFE and in fact was designed as a liquid or grease form of PTFE. It is thermally stable, nonflammable (even in liquid oxygen), and insoluble in water, acids, bases, and most organic
solvent A solvent (s) (from the Latin '' solvō'', "loosen, untie, solve") is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for ...
s. It is nonvolatile and useful over a broad temperature range of or higher. Its high resistance to ionizing radiation makes it useful for the aerospace and nuclear industries. Formulations exist which are able to withstand extreme pressure, resist outgassing in high vacuum, and operate under intense mechanical stress. Other companies manufacture PFPE lubricants, such as Solvay's Fomblin range, with some formulations having comparable properties.


Safety

The manufacturer states on Krytox tubes, "May cause mild skin and eye irritation. Contact with very hot surfaces (above 500°F/260°C) can generate fumes which can cause coughing or respiratory irritation. Large amounts could lead to lung damage which might not be apparent for several hours. These fumes may also cause flu-like symptoms."


References


External links

* {{Authority control Non-petroleum based lubricants DuPont