<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31373719</termId><termName>potassium hydroxide</termName><termType>PT</termType><termNote><![CDATA[ A caustic deliquescent solid of the composition KOH, used as a bleach and in the production of liquid soaps and detergents, oxalic acid, matches, and many potassium compounds. ]]></termNote><termCreatedDate>2026-03-30 20:40:47</termCreatedDate><relation><relationType>UF</relationType><termId>31373720</termId><termName>caustic potash</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31373721</termId><termName>potash, caustic</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343456</termId><termName>potassium compounds</termName><termType>PT</termType></relation></term>  </Zthes>