Service: Condensed chemical resistance for keyboards covered with stainless steel

Chemical resistance according to DIN 42115
In a departure from DIN 42115, the reaction time was extended to a period of 24 h. The assessment took place directly after chemical residue was removed and was then repeated after 24 h.

Substance CAS-Number* Resistance
Organic solvents Acetone 67-64-1 Resistant
Ethanol 64-17-5 Resistant
Isopropanol 67-63-0 Resistant
Loesol 80 (90-100% hydrocarbons, naphta) 64742-49-0 Resistant
Methyl-ethyl-keton 78-93-3 Resistant
White spirit N/A Resistant

Inorganic solvents Cellulose thinner N/A Resistant
Screen cleaner N/A Resistant
Thinning agent N/A Resistant

Acids Acetic acid 5% 64-19-7 Resistant
Phosphoric acid 10% 7664-38-2 Resistant
Sulphuric acid 10% 7664-93-9 Resistant

Other substances and mixtures Ammonia 7664-41-7 Resistant
Vinegar-based cleaner; ingredients/100g
<5% anionic tensides
N/A Non-resistant
Machine oils N/A tba
Potash 584-08-7 Resistant
Sweat N/A tba
Soda N/A tba
Hydrogen peroxide 12% 7722-84-1 Resistant

LABS test
White spirit: cellulose thinner: methyl-ethyl-ketone N/A Resistant

* Chemical Abstracts Service Registry Number, see

"Resistant" No change after exposure to the chemical

"Resistant with some restrictions" Slight, insignificant changes after exposure to the chemical without any impairment of functions

"Non-resistant" A significant change after exposure to the chemical with or without impairment of funtions

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