<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31320295</termId><termName>nitric acid</termName><termType>PT</termType><termNote><![CDATA[  A colorless or yellowish, fuming, caustic, corrosive, water-soluble liquid, HNO3, having powerful oxidizing properties, usually obtained from ammonia or from Chile saltpeter. It is used cheifly in the manufacture of explosives and fertilizers. ]]></termNote><termCreatedDate>2026-03-30 20:26:19</termCreatedDate><relation><relationType>UF</relationType><termId>31320296</termId><termName>acid, nitric</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31306060</termId><termName>acid</termName><termType>PT</termType></relation></term>  </Zthes>