Caustic agent

This crossword clue is for the definition: Caustic agent.
it’s A 13 letters crossword puzzle definition.
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Possible Answers: LYE.

Last seen on: NY Times Crossword 2 Aug 22, Tuesday

Random information on the term “LYE”:

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Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH)2. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed or slaked with water. It has many names including hydrated lime, caustic lime, builders’ lime, slaked lime, cal, and pickling lime. Calcium hydroxide is used in many applications, including food preparation, where it has been identified as E number E526. Limewater, also called milk of lime, is the common name for a saturated solution of calcium hydroxide.

Calcium hydroxide is poorly soluble in water with a retrograde solubility increasing from 0.66 g/L at 100 °C to 1.89 g/L at 0 °C. With a solubility product Ksp of 5.02×10−6 at 25 °C[clarification needed], its dissociation in water is large enough that its solutions are basic according to the following dissolution reaction:

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