<?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">liquid carbon dioxide</topic></authority><related type="broader"><topic>carbon dioxide</topic></related><variant type="other"><topic>dioxide, liquid carbon</topic></variant> <note xml:lang="en"><![CDATA[ Carbon dioxide used in its liquid state as a non-toxic, environmentally friendly solvent for cleaning, degreasing, and decontaminating materials. Liquid carbon dioxide is also used to promote plant growth in a greenhouse environment, and, stored under pressure in a tank, as a carbon dioxide fire extinguisher. And has been used in the treatment of ethnological and natural history museum collections.  ]]></note></mads>