<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343261</termId><termName>phosphine</termName><termType>PT</termType><termNote><![CDATA[ Colorless, noxious, highly flammable, poisonous gas, a combination of phosphorous and hydrogen. While it has been employed as a fast-acting, inexpensive fumigant which leaves no residue, health hazards associated with phosphine, as well as the compound's capacity to damage such materials as  leather, feathers, and fur, have restricted its use. ]]></termNote><termCreatedDate>2026-03-30 20:32:35</termCreatedDate><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation></term>  </Zthes>