<?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 fluoride</topic></authority><related type="broader"><topic>sodium compounds</topic></related><related type="broader"><topic>preservative by composition or origin</topic></related><related type="broader"><topic>fumigant</topic></related><variant type="other"><topic>fluoride, sodium</topic></variant> <note xml:lang="en"><![CDATA[ Colorless, odorless, crystalline salt used in very dilute solutions to fluoridate water and treat tooth decay. In higher concentrations, sodium fluoride is used as a fumigant, and a preservative for zoological specimens, paint, plaster, wood, and masonry. ]]></note></mads>