electrolyte

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Lye is a corrosive alkaline substance, commonly sodium hydroxide (NaOH, also known as Caustic soda) or historically potassium hydroxide (KOH, from hydrated Potash). Previously, lye was among the many different alkalis leached from hardwood ashes.[1] Now, lye is commercially manufactured using a membrane cell method, which is an improvement from the previous diaphragm cell methods of Castner-Kellner, Gibbs, and Nelson.[who?]

Solid dry lye is commonly available as flakes, pellets, microbeads, and coarse powder. It is also available as solution, often dissolved in water. Lye is valued for its use in food preparation, soap making, biodiesel production, and household uses, such as oven cleaner and drain opener.

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BTW that was an excerpt from Wikipedia, just forgot to tag it at the top

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