<?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">alkali</topic></authority><related type="other"><topic>alkalinity</topic></related><related type="other"><topic>acid</topic></related><related type="broader"><topic>base</topic></related> <note xml:lang="en"><![CDATA[ Compounds having highly basic properties, specifically any of the soluble hydroxides of the alkali metals; a general term now used for any basic material (pH greater than 7). In general, alkali compounds will react with fatty acids to form soaps; turn litmus paper blue; dissolve in water to form alkaline solutions; taste bitter and are irritating to the skin. Alkaline solutions are used in deacidifying and buffering paper. Alkalis also act as fluxes in ceramics and glass production.  ]]></note></mads>