<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31456153</termId><termName>magnesium carbonate</termName><termType>PT</termType><termNote><![CDATA[ Inert pigment made primarily of the white crystalline salt, magnesium carbonate.  ]]></termNote><termCreatedDate>2026-03-30 21:02:47</termCreatedDate><relation><relationType>UF</relationType><termId>31456154</termId><termName>carbonate, magnesium</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31456155</termId><termName>pigment white 18</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31437200</termId><termName>inert pigment</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31344829</termId><termName>magnesium carbonate</termName><termType>PT</termType></relation></term>  </Zthes>