<?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">toluidine red</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31437693</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:58:00</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">red, toluidine</dcterms:alternative> <dcterms:alternative xml:lang="en">toluidine reds</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Any of several bright, transparent, synthetic azo-type organic red pigments. Toluidine reds are made using the reaction of beta-naphthol with 2-nitro-4-toluidine. Toluidine red was first synthesized in 1904 in Germany, and reached its peak of popular use in the 1970s. Toluidine reds have fair lightfastness and weather resistance: they are used in industrial coatings for air-dried and baked enamels and auto finishes, in wax crayons, pastels, and watercolors; however, they have a tendency to bleed in oil paints. It is a suspected carcinogen. ]]></dc:description></metadata>