<?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">sodium sulfate</topic></authority><related type="other"><topic>mirabilite</topic></related><related type="broader"><topic>sodium compounds</topic></related><variant type="other"><topic>sodium sulphate</topic></variant><variant type="other"><topic>sulfate, sodium</topic></variant> <note xml:lang="en"><![CDATA[ A sodium compound which in its anhydrous form occurs in nature as a chemical precipitate found in the minerals thenardite and mirabilite. It may also be obtained synthetically by mixing sodium chloride and sulfuric acid. As a solid or powder, sodium sulphate is used in the manufacture of various products. In conservation science it is addressed as an agent of salt damage to stone. ]]></note></mads>