<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31303902</termId><termName>glycerin</termName><termType>PT</termType><termNote><![CDATA[ Colorless, heavy, sweet liquid derived from natural fats and oils.  It can be used as a plasticizer in certain media. ]]></termNote><termCreatedDate>2026-03-30 20:21:43</termCreatedDate><relation><relationType>UF</relationType><termId>31303903</termId><termName>glycerol</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298623</termId><termName>organic material</termName><termType>PT</termType></relation></term>  </Zthes>