<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343456</termId><termName>potassium compounds</termName><termType>PT</termType><termNote><![CDATA[ Substances composed by the chemical union of potassium with additional elements.  ]]></termNote><termCreatedDate>2026-03-30 20:32:38</termCreatedDate><relation><relationType>UF</relationType><termId>31343457</termId><termName>compounds, potassium</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31343458</termId><termName>potassium compound</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320501</termId><termName>potassium and potassium compounds</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373719</termId><termName>potassium hydroxide</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373722</termId><termName>potash</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373725</termId><termName>potassium persulfate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373727</termId><termName>potassium permanganate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373729</termId><termName>potassium oxide</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373731</termId><termName>potassium hypophosphite</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373733</termId><termName>potassium citrate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373735</termId><termName>potassium lactate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373737</termId><termName>potassium nitrate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373745</termId><termName>potassium chloride</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31373749</termId><termName>potassium peroxide</termName><termType>PT</termType></relation></term>  </Zthes>