Pepperl+Fuchs EXTA-K1, Technical Manual, Page: 16 / 33

SKPCKM10_V201_TH_E.doc / 03.07.06 EXTA-Kx Exi PC-keyboards
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6.6 EXTA-K chemical resistance of the front foil
Polyester foil, resistant to the following chemicals in accordance with DIN 42 115 Part 2:
Concentration 100%, unless otherwise specified:
Alcohols: Alkaline solutions:
Ethanol Ammonia < 2%
Cyclohexanol Sodium hydroxide solution < 2%
Diacetone alcohol
Glycol Saline solutions:
Glycerine Alkali carbonates
Isopropanol Bichromates
Methanol
Yellow potassium prussiates
Aldehydes: Miscellaneous substances:
Acetaldehyde Molecular chlorine
Formaldehyde Cresol phenol soaps in solution
Oxygen
Hydrocarbons:
Tricresyl phosphate
Aliphatic hydrocarbons Water
Benzine Hydrogen peroxide < 25%
Benzene
Toluene
Washing, rinsing and cleaning agents:
Xylene Potassium soap
Detergent solution (tensides)
Chlorinated hydrocarbons: Softener
Chlorofluorocarbons
Perchloroethylene
Industrial oils and greases:
III-trichloroethylene Drilling emulsions
Trichloroethylene Diesel fuel
Boiled oil
Other organic solvents: Fuel oil
Ether Paraffin oil
Acetone Castor oil
Diethyl formamide Silicone oil
Dioxane Turpentine oil and turpentine substitute
Acids:
Formic acid < 50%
Acetic acid
Phosphoric acid < 30%
Hydrochloric acid
≤
10%
Nitric acid
≤
10%
Not resistant to:
Concentrated mineral acids
Concentrated alkaline solutions
High-pressure vapour hotter than 100°C Benzyl alcohol
Methylene chloride
Like all polyester foils, not resistant to long-term exposure to direct sunlight (UV).