<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343439</termId><termName>zinc hydroxychloride</termName><termType>PT</termType><termNote><![CDATA[ A zinc-hydroxy compound with chemical formula Zn5(OH)8Cl2 H2O. It is used to coat substrates normally infested by algae, such as concrete roofing tiles and other silicate-containing building materials, to prevent or minimize algal infestation. ]]></termNote><termCreatedDate>2026-03-30 20:32:37</termCreatedDate><relation><relationType>UF</relationType><termId>31343440</termId><termName>simonkolleite</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31343441</termId><termName>zinc chloride hydroxide monohydrate</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation></term>  </Zthes>