<?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">butane</topic></authority><related type="broader"><topic>liquefied petroleum gas</topic></related> <note xml:lang="en"><![CDATA[ A four carbon saturated alkane hydrocarbon that occurs naturally in petroleum. It is used in high performance liquid fuels for household and industrial purposes, as a propellant in aerosols, and as a raw material for synthetic polymers. ]]></note></mads>