Soda lye NaOH

The first and earliest definition of acids and bases was proposed in the 1800 s by Swedish scientist Svante Arrhenius, who said that an acid was anything that dissolved in water to yield iF ions (like stomach acid HCl, hydrochloric acid), and a base was anything that dissolved in water to give up OH ions (like soda lye NaOH, sodium hydroxide). Acids and bases were already widely used in various occupations and activities of the time, so Arrhenius definition merely attempted to explained well-known and long-observed phenomenon. 

Soda lye (NaOH 25%) 353 K. hot, flowing 80 C almost 100 % Operational test weight loss of 0.6 % after 9 months... 

Soda lye (NaOH 10%) 20 C almost 100 % Materials Testing Institute Neuwied 0.9 % weight loss after 30 days... 

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