<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">potassium sodium tartrate</topic></authority><related type="broader"><topic>salt</topic></related><variant type="other"><topic>Rochelle salt</topic></variant><variant type="other"><topic>sodium potassium tartrate</topic></variant><variant type="other"><topic>tartrate, potassium sodium</topic></variant> <note xml:lang="en"><![CDATA[ Colorless double salt first prepared in La Rochelle, France, and thus also known as Rochelle salt. It is used as an analytical reagent, as a laxative, and in making mirrors.In conservation science, it is used in saturated solution as a cleaning agent on bronze and other metal objects. ]]></note></mads>