<?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 hydroxide</topic></authority><related type="broader"><topic>sodium compounds</topic></related><variant type="other"><topic>caustic soda</topic></variant><variant type="other"><topic>hydroxide, sodium</topic></variant><variant type="other"><topic>lye</topic></variant><variant type="other"><topic>sodium hydrate</topic></variant> <note xml:lang="en"><![CDATA[ A white, deliquescent, water-soluble solid, NaOH, usually in the form of lumps, sticks, chips, or pellets, that upon solution in water generate heat. It is used for the manufacture of other chemicals, rayon, film, and in medicine as a caustic. ]]></note></mads>