Performance Lubricants

Chemical Stability
Product Information
Krytox™ perfluoropolyether (PFPE) oils and greases
thickened with polytetrafluoroethylene (PTFE) exhibit
exceptional chemical stability.
Chemical stability and inertness are criticalcharacteristics of Krytox™ perfluorinated lubricants(PFPE). Krytox™ oils and greases will not react with mostchemicals* or other lubricants, nor cause them to degrade.
In addition, as a result of their solubility characteristics
and density, Krytox™ lubricants do not mix well with mostchemicals or other hydrocarbon-based lubricants andwill separate out. Krytox™ oils and greases are completelyinsoluble in water.
Krytox™ PFPE oils are essentially inert to most chemicals.
No reaction is observed with boiling sulfuric acid, fluorine
gas at 200 °C (392 °F), molten sodium hydroxide,
chlorine trifluoride at 10–50 °C (50–122 °F), uranium
hexafluoride gas at 50 °C (122 °F), or any of thefollowing materials at room temperature: JP-4 turbine
fuel, unsymmetrical dimethyl-hydrazine, hydrazine,
diethylenetriamine, ethyl alcohol, aniline, 90% hydrogenperoxide, red fuming nitric acid, or nitrogen tetroxide.
Krytox™ oils are slightly soluble in hydrazine and havemoderate (25–30%) solubility in nitrogen tetroxide.
Krytox™ oils are not soluble in common organic solvents,
acids, and bases, although some solvents will dissolve
PFPE oils. Krytox™ oils are completely miscible in highly
fluorinated solvents and refrigerant gases, such as:• Trichlorotrifluoroethane (Freon™ 113)• Hexafluorobenzene• 2,3-dihydrodecafluoropentane (Vertrel™ XF)• Perfluorooctane*Exceptions include Lewis acids and alkali metals• Perfluorohexane• Perfluorodimethylcyclobutane isomers• 1,1 dichloro-1-fluoroethane
These fluorinated solvents will not react with PFPE oils,
but the oils will be carried away from the lubricating point.
PFPEs are freely soluble in supercritical CO2.
Krytox™ lubricants have also been tested and used in thepresence of gaseous, liquid oxygen and chlorine with noreactivity noted.
Krytox™ lubricants are safe for use with rubber, elastomers,
plastics, and metals commonly used as seals and bearings.
A type of chemical known as a Lewis acid (electronpair acceptor) can react with PFPE oils and will limit
the temperature at which they can be used. TypicalLewis acids are boron trifluoride, aluminum chloride,iron (III) chloride, and titanium tetrachloride. At elevatedtemperatures, these materials can lead to decompositionof any PFPE.
Caution should be taken with metallic alkalai, such as
sodium and lithium metals, as reactions could occur
readily.
Some grease grades contain additives for anti-corrosion
or extreme pressure, and these additives do not have thesame chemical stability as oils and thickeners. In chemicalcontact applications, it is typically common to use greases
without additives.
Krytox™ performance lubricants are not only resistant tooxygen and reactive gases, but they are inert to virtually all
chemicals commonly used in most industries.

Performance Lubricants

Krytox™

Krytox™ lubricants have been used in contact with the following chemicals, in addition to many others not listed:
AcetoneAcetylene
Acrylonitrile
Alcohol
Ammonia
Ammonium Nitrate
AnilineAqueous Caustic
BenzeneBoiling Sulfuric Acid
Brake Fluids
BromineButadiene
ButaneButylene
Carbon Dioxide
Carbon Monoxide
Carbon Tetrachloride
Chlorine, Liquid or Gas
Chlorine Trifluoride
Chloroform
Dichlorosilane
Diesel Fuel
Diethylenetriamine
Dimethylether
Ester Oils

EthaneEthyl Alcohol
Ethyl Chloride
Ethylene
Ethylene Glycol
Ethylene Oxide
Fluorine
Formaldehyde
Gasoline
HeliumHeptaneHexafluoropropylene
HexaneHydrazine
Hydrobromic Acid
Hydrocarbon Compounds
Hydrocarbon Oils
Hydrochloric Acid
Hydrocyanic Acid
Hydrofluoric Acid
HydrogenHydrogen Bromide
Hydrogen Chloride
Hydrogen Peroxide
Hydrogen Sulfide
IodineIsopropyl Alcohol
JP-4 and -8 Turbine Fuel
Lithium Glycol
MethaneMethanolMethylamine
Methylbromide
Methylchloride
Methylmercaptan
Methylsilane
Mineral Acids
Molten Caustic
Monosilane
Natural Gas
Nitric Acid
Nitrogen
Nitrogen Oxide
Nitrogen Tetroxide
Nitrogen Trifluoride
Nitrous Oxide (Anesthesia)
Organic Acids
Organic Compounds
Oxygen, Liquid or Gas
Ozone
PentanePerchloroethylene

Phosgene
Phosphoric Acids
Polyalkylene Glycols
Polyalphaolefins
Polyol Ester Oils
Polyphenyleneoxide (PPO)
Potassium Chloride
Potassium Hydroxide
Potassium Permanganate
PropanePropylene
Red Fuming Nitric Acid
Silicone Products
Sodium Hydroxide
Sulfur Hexafluoride
Sulfur OxidesSulfuric Acid
Unsymmetrical DimethylHydrazine
Uranium Hexafluoride
Trifluoroacetylchloride
Trimethylamine
Vinyl Bromide
Vinyl Chloride
Vinyl Fluoride
Water, SteamThe information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

For product information, industry applications, technical assistance, or global distributor contacts, visit krytox.com or within the U.S. and Canada, call 1-844-773-CHEM/2436 or
outside of the U.S., call 1-302-773-1000.
© 2017 The Chemours Company FC, LLC. Freon™, Krytox™, Vertrel™, and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and theChemours Logo are trademarks of The Chemours Company.
Replaces: K-20564-3
C-10355 (10/17)