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The classic book about woad is The Woad Plant and its Dye [38] by J. B. Hurry, Oxford University Press of 1930, which contains an extensive bibliography. [39] A method for producing blue dye from woad is described in The History of Woad and the Medieval Woad Vat (1998) ISBN 0-9534133-0-6. [40] Woad is biodegradable and safe in the environment.
Erythrosine, also known as E127 and Red No. 3, is an organoiodine compound, specifically a derivative of fluorone. It is a red-pink dye used for food coloring, cosmetics, hair coloring, pet products, and diverse industrial colorings. [2] [3] It is the disodium salt of 2,4,5,7-tetraiodofluorescein. [2]
Natural yellow 3 75300 natural 458-37-7: D&C Red 33: Azo fuchsine Acid red 33 17200 azo 3567-66-6: o-Dianisidine: Disperse black 6 24110 diazo 119-90-4: Dibenzpyrenequinone: Vat golden yellow GK Vat yellow 4 59100 anthraquinone 128-66-5: Dibromoanthanthrone: Vat brilliant orange 3RK Vat orange 3 Pigment red 168 59300 anthanthrone 4378-61-4
All of the dyes listed above — yellow dyes Nos. 5 and 6, blue dyes Nos. 1 and 2 and green dye No. 3 — are synthetic additives, Jamie Alan, an associate professor of pharmacology and toxicology ...
Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources—roots, berries, bark, leaves, and wood—and other biological sources such as fungi. [1] Archaeologists have found evidence of textile dyeing dating back to the Neolithic period.
Adjective dyes are those dyes that require use of a mordant to bind the color to the fiber. [2] alkanet Alkanet or dyer's bugloss (Alkanna tinctoria) is a traditional plant source of red dye. [3] alum Alum (aluminum sulfate) is a naturally occurring basic mordant widely used in the ancient world. [4] añil
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Many of the dyes are made from lichens, the useful ones for this purpose being known as crottle.. The process employed is to wash the thread thoroughly in urine long kept ("fual"), rinse and wash in pure water, then put into the boiling pot of dye which is kept boiling hot on the fire.