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Purple Dye: Difference between revisions
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The purple dye usually found during orientation week is made with [https://en.wikipedia.org/wiki/Crystal_violet gentian violet] (also known as crystal violet or methyl violet 10B), a synthetic chemical which has a long and varied history as both a medicinal agent (as an anti-bacterial and anti-fungal agent) and as a dye. The synthesis of gentian violet has been attributed to French chemist Charles Lauth as early as 1861, originally named "Violet de Paris".<ref>Maley et al, "Gentian Violet: A 19th Century Drug Re-Emerges in the 21st Century", Exp Dermatol 2013 Dec, 22(12): 775-780. [[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4396813/|doi: 10.111]]</ref> It has also been used to dye paper, as a component of navy blue and black inks, and as a colourizer for certain household products. | The purple dye usually found during orientation week is made with [https://en.wikipedia.org/wiki/Crystal_violet gentian violet] (also known as crystal violet or methyl violet 10B), a synthetic chemical which has a long and varied history as both a medicinal agent (as an anti-bacterial and anti-fungal agent) and as a dye. The synthesis of gentian violet has been attributed to French chemist Charles Lauth as early as 1861, originally named "Violet de Paris".<ref>Maley et al, "Gentian Violet: A 19th Century Drug Re-Emerges in the 21st Century", Exp Dermatol 2013 Dec, 22(12): 775-780. [[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4396813/|doi: 10.111]]</ref> It has also been used to dye paper, as a component of navy blue and black inks, and as a colourizer for certain household products. | ||
To create the dye for orientation week, a mixture is created consisting of isopropyl (rubbing) alcohol, water, and gentian violet stirred in a large drum. The alcohol acts as a useful solvent to ensure that the dye will dry more quickly, as well as maintaining the solution’s sterility. The amount of water in the dye determines its strength, and therefore how easy or hard it is to remove it. The less water added to the mixture, the longer it will stay on the skin. The dye used for F!rosh Week is usually composed of one gram of dye per 600 litres of water. At this strength, it tends to come off in a day or two with vigorous scrubbing. However, the nails and hair will remain purple longest, as those cells are very slowly replaced.<ref>Michael Au, "The Science Behind Purple Dye", ''The Cannon''. http://cannon.skule.ca/the-science-behind-purple-dye-3/</ref | To create the dye for orientation week, a mixture is created consisting of isopropyl (rubbing) alcohol, water, and gentian violet stirred in a large drum. The alcohol acts as a useful solvent to ensure that the dye will dry more quickly, as well as maintaining the solution’s sterility. The amount of water in the dye determines its strength, and therefore how easy or hard it is to remove it. The less water added to the mixture, the longer it will stay on the skin. The dye used for F!rosh Week is usually composed of one gram of dye per 600 litres of water. At this strength, it tends to come off in a day or two with vigorous scrubbing. However, the nails and hair will remain purple longest, as those cells are very slowly replaced.<ref>Michael Au, "The Science Behind Purple Dye", ''The Cannon''. http://cannon.skule.ca/the-science-behind-purple-dye-3/</ref. | ||
== References == | == References == | ||
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