<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343377</termId><termName>hydrazine</termName><termType>PT</termType><termNote><![CDATA[ Hydrazine is a hydronitrogen compound and a powerful reducing agent. It is a colorless liquid synthesized for use in pesticides and as a corrosion inhibitor in boilers. It is also a component in rocket fuels. In conservation, hydrazine has been used to reduce manganese content in medieval stained glass and thus to lighten browning.  ]]></termNote><termCreatedDate>2026-03-30 20:32:36</termCreatedDate><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation></term>  </Zthes>