<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343420</termId><termName>diethyl carbonate</termName><termType>PT</termType><termNote><![CDATA[ A compound belonging to the family of dicarboxylic acids and derivatives; organic compounds containing exactly two carboxylic acid groups of carbonic acid and ethanol with the formula OC(OCH2CH3)2, appearing as a colorless liquid with an inoffensive odor and a flash point of 77 degrees Fahrenheit. Insoluble and less dense than water, it will float on the surface. In conservation, it has been used as a solvent to remove adhesives. ]]></termNote><termCreatedDate>2026-03-30 20:32:37</termCreatedDate><relation><relationType>UF</relationType><termId>31343421</termId><termName>DEC</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31343422</termId><termName>carbonate, diethyl</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31343423</termId><termName>carbonic acid diethyl ester</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation></term>  </Zthes>