<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31373618</termId><termName>arsenical copper</termName><termType>PT</termType><termNote><![CDATA[ Compound of copper containing up to 0.5% arsenic which, at elevated temperatures imparts higher tensile strength and a reduced tendency to scaling. ]]></termNote><termCreatedDate>2026-03-30 20:40:45</termCreatedDate><relation><relationType>UF</relationType><termId>31373619</termId><termName>copper, arsenical</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343417</termId><termName>arsenide</termName><termType>PT</termType></relation></term>  </Zthes>