<?xml version="1.0" encoding="utf-8"?><rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:skos="http://www.w3.org/2004/02/skos/core#"  xmlns:map="http://www.w3c.rl.ac.uk/2003/11/21-skos-mapping#"  xmlns:dct="http://purl.org/dc/terms/"  xmlns:dc="http://purl.org/dc/elements/1.1/"><skos:ConceptScheme rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_en">  <dc:title>Tesaurus d&apos;Art i Arquitectura</dc:title>  <dc:creator>Getty Institute</dc:creator>  <dc:contributor></dc:contributor>  <dc:publisher></dc:publisher>  <dc:rights></dc:rights>  <dc:subject></dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:date>0000-00-00</dc:date>  <dct:modified>2024-01-24 15:40:44</dct:modified>  <dc:language>en</dc:language>  </skos:ConceptScheme>  <skos:Concept rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31373610"><skos:prefLabel xml:lang="en">stannic oxide</skos:prefLabel><skos:notation>300404139</skos:notation><skos:altLabel xml:lang="en">dioxide of tin</skos:altLabel><skos:altLabel xml:lang="en">oxide, stannic</skos:altLabel><skos:altLabel xml:lang="en">SnO2</skos:altLabel><skos:altLabel xml:lang="en">stannic oxide</skos:altLabel><skos:altLabel xml:lang="en">tin dioxide</skos:altLabel> <skos:scopeNote xml:lang="en">Naturally occuring as tinstone or cassiterite, stannic oxide is the principal ore of tin. It can be artificially obtained as an anhydrous powder when tin is burned in the presence of oxygen, or by igniting stannous hydrate or stannous oxalate. Stannic oxide is used in the manufacture of white glazes and enamels, and as an opacifier. In its pure state is white or light yellow in color. </skos:scopeNote><skos:inScheme rdf:resource="http://AATesaurus.cultura.gencat.cat/aat/getty_en"/><skos:related rdf:resource="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31344559"/><skos:broader rdf:resource="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31343415"/><skos:exactMatch> <skos:Concept rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_es/index.php?tema=14085142"> <skos:prefLabel xml:lang="es">stannic oxide (traducció pendent)</skos:prefLabel> </skos:Concept></skos:exactMatch><skos:exactMatch> <skos:Concept rdf:about="http://AATesaurus.cultura.gencat.cat/aat/getty_ca/index.php?tema=9847598"> <skos:prefLabel xml:lang="ca">stannic oxide (traducció pendent)</skos:prefLabel> </skos:Concept></skos:exactMatch>  <dct:created>2026-03-30 20:40:45</dct:created>  </skos:Concept></rdf:RDF>