<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">thiourea</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343354</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:32:36</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">sulfocarbamide</dcterms:alternative> <dcterms:alternative xml:lang="en">sulfourea</dcterms:alternative> <dcterms:alternative xml:lang="en">thiocarbamide</dcterms:alternative> <dcterms:alternative xml:lang="en">thiurea</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Shiny white crystalline compound used in photography as a toner and to remove stains from negatives. Capable of dissolving silver salts, thiourea is often an active ingredient in silver-dip tarnish removal solutions. It is also used to accelerate the vulcanization of rubber. Its composition is the same as that of urea but with a sulfur atom in place of the oxygen atom. ]]></dc:description></metadata>