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Among the 22 cases are from sludge to nobility: artificial dye, get fired up with friction lights: matches, from ship to staircase: the history of the Slinky, and peering into the unknown: the discovery of X-rays.
One of the most popular dyes used in the manufacturing of DSSCs is N719 (cis-diisothiocyanato-bis(2,2'-bipyridyl-4,4'-dicarboxylato) ruthenium (II) bis(tetrabutylammonium)); this is an artificial dye with a central ruthenium atom in its molecular structure and is capable of absorbing photons below 750 nm [5].
Many grapefruit juices contain red #40, an artificial dye. Many consumers don't like artificial colors in the foods they eat.
The first artificial dye was synthesized in the laboratory in 1856, and permanent hair colorants have been in commercial use for over 100 years.
A two-choice test was also conducted to compare the gelatinized blend both with or without artificial dye. A 0.5 g quantity of each blend was placed at opposite sides of a 5 cm Petri dish.
While it might be impossible to prevent your children from eating anything with artificial dye, you can do your part by shopping at Whole Foods or Trader Joe's--both chains have banned products that use artificial dyes and carry all-natural food coloring for home cooking and baking projects.
And that's just what William Henry Perkin did back in 1856 when he produced the world's first artificial dye. A tiny ribbon of silk dyed with a sample from Perkin's original batch sits on my desk.
Well, if a mad German drains all your blood, then pumps back in an artificial dye after clamping off a major artery, you're screwed.
Other topics include mechanical strength tests on 1976 PVC pipe, secondary contamination in Polish drinking water, pipe break detection, corrosion models for cast iron trunk mains, and the adsorption of cationic artificial dye on spent tea leaves.
In response to customer requests for more natural formulas, the products are now free of parabens, phthalates, petrolatum, gluten and artificial dye, and are not tested on animals.
All of Tint & Tonic's products are artificial dye, chemical, paraben, and preservative-free, and are packaged in sustainable, biodegradable and recyclable containers.
Somewhere along the way, they removed the artificial dye and consumers accepted the change, and embraced it.