<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31411534</termId><termName>xylene</termName><termType>PT</termType><termNote><![CDATA[ A mixture of three isomeric hydrocarbons form commercial xylene;  a colorless, flammable, toxic liquid insoluble in water but that may be combined with many organic liquids and is commonly used as a solvent for lacquers and rubber cements. Other forms of xylene are used as solvents, components of aviation fuel, and for dyes, fibers, and films. ]]></termNote><termCreatedDate>2026-03-30 20:50:39</termCreatedDate><relation><relationType>UF</relationType><termId>31411535</termId><termName>xylenes</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31374288</termId><termName>aromatic hydrocarbon</termName><termType>PT</termType></relation></term>  </Zthes>