BY NC ND ID: 290344
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THE CHEMISTRY OF HIGHLIGHTER COLOURS BY NC ND © COMPOUND INTEREST 2015 - WWW.COMPOUNDCHEM.COM | Twitter: @compoundchem | Facebook: www.facebook.com/compoundchem Shared under a Creative Commons Attribution-NonCommercial-NoDerivatives licence. C PYRANINE - SOLVENT GREEN 7 (Pyrene dye) ACID BLUE 9 (Triphenylmethane dye) BASONYL RED 485 (TOP) & BASIC YELLOW 40 (Xanthene dye and Coumarin dye) SOLVENT RED 49 (Rhodamine dye) Pyranine, a pyrene dye, is the dye commonly used in yellow highlighters. Another compound pyrene dye with a triphenylmethane dye, a green ink can also be obtained. commonly used to achieve a blue ink colour; it is used in combination with a colour-brightening derivative. required to achieve an orange colour. A rhodamine dye can be used to impart a pink colour to the highlighter ink. A rhodamine dye can also be combined with a triphenylmethane dye in order to produce a purple-coloured highlighter. Yellow Blu Orang Pin HIGHLIGHTERS COME IN A RANGE OF COLOURS. THIS GRAPHIC SHOWS A SELECTION OF COMPOUNDS THAT CAN BE USED TO IMPART THESE COLOURS TO THE INK. Na+ Na+ Na+SOOO-SOOO- OH S O O -O N+SOO O- SOO-ONSOO-OCH3 Na+ Na+ O+ O O HN H Cl - O N N+N O Cl - OOONN