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The premier luxury dye of the ancient world was Tyrian purple or royal purple, a purple-red dye which is extracted from several genera of sea snails, primarily the spiny dye-murex Murex brandaris (currently known as Bolinus brandaris). Murex dye was greatly prized in antiquity because it did not fade, but instead became brighter and more ...
A "vital dye" or stain is a dye capable of penetrating living cells or tissues without causing immediate visible degenerative changes. [26] Such dyes are useful in medical and pathological fields in order to selectively color certain structures (such as cells) in order to distinguish them from surrounding tissue and thus make them more visible ...
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.
Vat Blue 36 is a vat dye that is chemically related to indigo. It is produced by condensation of 4-methyl-5-chloro-7-methoxy-3-indolinone and 5,7–dichloro-3-(2H)-thianaphthenone . [ 1 ]
The dye is an organic compound of bromine (i.e., an organobromine compound), a class of compounds often found in algae and in some other sea life, but much more rarely found in the biology of land animals. This dye is in contrast to the imitation purple that was commonly produced using cheaper materials than the dyes from the sea snail. [2]
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A dye is a colored substance that bonds to a material. Dye(s) may also refer to: People. Dye (surname), people with the surname; DyE, French musician;
Kohl powder A fourth-century CE double cosmetic tube for kohl from Egypt, in the Louvre Museum in Paris. Kohl is an eye cosmetic, traditionally made by crushing stibnite (antimony sulfide) for use similar to that of charcoal in mascara.