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potassium binoxalate

noun, Chemistry
a white, crystalline, hygroscopic, poisonous solid, KHC 2 O 4 , that is usually hydrated: used chiefly for removing ink stains, cleaning metal and wood, and in photography.
Also called salt of sorrel, sorrel salt, potassium acid oxalate.

salt of sorrel

noun, Chemistry Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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