<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31319932</termId><termName>sodium perborate</termName><termType>PT</termType><termNote><![CDATA[ White, odorless, water-soluble crystalline powder found in almost all laundry soaps. It is a mild alkaline oxidizing agent which serves to increase detergency. It is also used as a deodorant and antiseptic. Dilute compounds of sodium perborate have been used in the conservation field to remove stains from textiles and other materials.  ]]></termNote><termCreatedDate>2026-03-30 20:26:13</termCreatedDate><relation><relationType>UF</relationType><termId>31319933</termId><termName>perborate, sodium</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343447</termId><termName>sodium compounds</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31305866</termId><termName>bleach</termName><termType>PT</termType></relation></term>  </Zthes>