<?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 carboxymethyl cellulose</topic></authority><related type="broader"><topic>polymers</topic></related><related type="broader"><topic>sodium compounds</topic></related><variant type="other"><topic>CMC</topic></variant><variant type="other"><topic>carboxymethyl cellulose</topic></variant><variant type="other"><topic>carboxymethyl cellulose, sodium</topic></variant><variant type="other"><topic>carboxymethylcellulose</topic></variant><variant type="other"><topic>cellulose gum</topic></variant><variant type="other"><topic>cellulose, sodium carboxymethyl</topic></variant> <note xml:lang="en"><![CDATA[ A water-soluble polymer, commonly known as carboxymethylcellulose (CMC), composed of the sodium salt of modified cellulose. A viscous gel when dispersed in water at low concentrations, CMC forms a tough, non-soluble film in reaction with heavy metal salts. In conservation, it is used as an adhesive and as a poultice for cleaning stone. ]]></note></mads>