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Naturally dyed skeins made with madder root, Colonial Williamsburg, VA. 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.
FD&C Blue No. 1 Acid blue 9 Food blue 2 42090 triarylethlamine 3844-45-9: Brilliant cresyl blue: Cresyl blue BBS Basic dye 51010 oxazin 81029-05-2: Brilliant green: Malachite green G Zeylonka Basic green 1 42040 triarylmethane 633-03-4: Bromsulfthalein: BSP triarylmethane 71-67-0: Bromocresol green: BCG triarylmethane 76-60-8: Bromocresol ...
Scheele's green was invented in 1775 by Carl Wilhelm Scheele. [2] [3] By the end of the 19th century, it had virtually replaced the older green pigments based on copper carbonate. It is a yellowish-green pigment commonly used during the early to mid-19th century in paints as well as being directly incorporated into a variety of products as a ...
Fast Green FCF, also called Food green 3, FD&C Green No. 3, Green 1724, Solid Green FCF, and C.I. 42053, is a turquoise triarylmethane food dye.Its E number is E143.. Fast Green FCF is recommended as a replacement of Light Green SF yellowish in Masson's trichrome, as its color is more brilliant and less likely to fade.
In 1814, Paris green was invented by paint manufacturers Wilhelm Sattler and Friedrich Russ, in Schweinfurt, Germany for the Wilhelm Dye and White Lead Company. They were attempting to produce a more stable pigment than Scheele's green , seeking to make a green that was less susceptible to darkening around sulfides.
The U.S. Food and Drug Administration has officially banned the use of r ed dye No.3 after the knowledge that it can cause cancer in animals — a discovery found more than 30 years ago.
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Pyranine is a hydrophilic, pH-sensitive fluorescent dye from the group of chemicals known as arylsulfonates. [2] [3] Pyranine is soluble in water and is used as a coloring agent, biological stain, optical detecting reagent, and pH indicator.