<?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">chlorine</topic></authority><related type="broader"><topic>inorganic material</topic></related><related type="broader"><topic>elements</topic></related><variant type="other"><topic>Cl</topic></variant> <note xml:lang="en"><![CDATA[ An element, symbol Cl and atomic number 17, that is at ordinary temperatures a greenish-yellow gas, toxic and corrosive to the eyes and respiratory system. It becomes a liquid at -29 degrees Fahrenheit. It occurs in nature in great abundance in compounds, such as common salt.  Free chlorine is used as a sterilizing agent, such as for water. ]]></note></mads>