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Dictionary

Rochelle' salt"

Chem., Pharm.
a colorless or white, water-soluble solid, KNaC₄H₄O₆·4H₂O, used in silvering mirrors, in the manufacture of Seidlitz powders and baking powder, and in medicine as a laxative. Also called potassium sodium tartrate.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Rochelle powders

roche moutonnée

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