<?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">hazardous substance</topic></authority><related type="narrower"><topic>hazardous waste</topic></related><related type="broader"><topic>materials by property</topic></related><variant type="other"><topic>hazardous substances</topic></variant><variant type="other"><topic>substance, hazardous</topic></variant> <note xml:lang="en"><![CDATA[ Any material that is by its nature or context toxic, corrosive, flammable or combustible, an irritant, a strong sensitizer, or that generates pressure through decomposition, heat, or other means. ]]></note></mads>