Rochelle salt


noun Chemistry, Pharmacology.

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.

Origin of Rochelle salt

First recorded in 1745–55; after La Rochelle

British Dictionary definitions for potassium sodium tartrate

Rochelle salt

noun

a white crystalline double salt, sodium potassium tartrate, used in Seidlitz powder. Formula: KNaC 4 H 4 O 6 .4H 2 O

Word Origin for Rochelle salt

C18: named after La Rochelle, French port

Medical definitions for potassium sodium tartrate

Rochelle salt
[ rə-shĕl, rō- ]

n.

potassium sodium tartrate