<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31471150</termId><termName>calcium hydroxide</termName><termType>PT</termType><termNote><![CDATA[ Colorless crystal or soft, white, alkaline powder prepared by reacting calcium oxide (lime) with water in a process called slaking. It is used in paints, dehairing hide, medicines, and in conservation for superficial protective treatments thanks to its conversion into calcium carbonate. ]]></termNote><termCreatedDate>2026-03-30 21:06:48</termCreatedDate><relation><relationType>UF</relationType><termId>31471153</termId><termName>slaked lime</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31471151</termId><termName>Ca(OH)2</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31471152</termId><termName>hydrated lime</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31457258</termId><termName>calcium oxide</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31478134</termId><termName>non-hydraulic lime</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31478138</termId><termName>nanolime</termName><termType>PT</termType></relation></term>  </Zthes>