Blue jeans

Although there is still demand for indigotin for dyeing blue jeans, it has lost a good part of the market to other blue dyes with better dyeing properties. At present, practically all the indigotin consumed in the United States comes from abroad. 

WD-50 s two bartenders wore raw-indigo blue jeans and dark cherry shirts. The arriving clientele, with their flattened hair, small bowling-bag purses and mini trench coats, could have stepped out of a dressing trailer parked on Clinton Street and walked into the restaurant as a group. 

Indigo is the dye used to color blue jeans. It is also used in foods under the name FD C Blue 2. Other closely related dyes are erioglaucine, known as FD C Blue 1 ... 

Question 5.7 What Puts the Blue in Blue Jeans ... 

While we think of blue jeans as the quintessential American item of clothing, it was the contributions of the German chemist Johann Friedrich Wilhelm Adolf von Baeyer that put the blue" in blue jeans and enabled this image of American culture to flourish. 

Blue jeans are never appropriate, except on certain specified days—such as casual Fridays or dress-down days, at the discretion of management. 

A classical example of how symmetry in the target molecule can greatly simplify the synthesis is provided by indigo [8], a natural dyestuff which has been known for more than 4000 years and which has experienced a boom in recent times thanks to "blue jeans" being so popular. 

We saw earlier that molecules X and Y, shown below, gave rise to the indigo colour of blue jeans and the purple colour of wool, respectively. 

From Activity 1.5, it can be seen that blue waves carry more energy than yellow waves (a blue flame is hotter than a yellow flame). Yet we often think of blue as being cool and yellow as being warm Blue jeans are cool the sun is warm. There is little relationship between the energy of visible waves and the psychological significance of their colors. 

Other uses include ferrocyanides (for blue jeans), acrylates, lactic acid, nitriloacetic acid (NTA), pharmaceuticals and specialty chemicals. 

The cell is a dynamic system it continually manufactures new structures and gets rid of old material. Since the compartments of a cell are closed off, each area faces the problem of obtaining new materials. There are two ways that it could solve the problem. First, each compartment might make all of its own supplies, like so many self-sufficient villages. Second, new materials could be centrally made and then shipped to other compartments, like a large city making blue jeans and radios to be sent to small towns. Or there might be a mixture of these two possibilities. 

Miss Muxdroozol is wearing blue jeans—how retro —and a beige T-shirt with a picture of Johann Balmer. She obviously likes Bob s lessons. 

The effectiveness of the anodic treatment at BDD was also tested with an insoluble dye-like dispersed indigo (Bechtold et al. 2006), a typical dye used for cotton work clothes and blue jeans. Also in this case the treatment was effective leading to the complete decolourisation of the solution. The current yield was found to decrease with the applied current indicating a direct oxidation at the electrode interphase under diffusive control. The addition of NaCl up to 144mgL 1 did not enhance the rate of the decolourisation, as well as persulphate, eventually formed from sulphate present in the supporting electrolyte, resulted ineffective. 

Dyes are intensely colored compounds used in fabrics, plastics, inks, and other products. Dyes were originally extracted from plants or animals and used to color cloth. For example, red carmine (page 2) was extracted from cochineal insects, and blue indigo (the dye used in blue jeans) was extracted from plant material. Both of these dyes are now synthesized in large quantities. The Romans extracted the indigo derivative Tyrian purple (imperial purple) from a sea snail and used the dye to color the robes of emperors and high-ranking senators. 

The most famous dyestuff is probably indigo, an ancient dye that used to be isolated from plants but is now made chemically. It is the colour of blue jeans. More modern dyestuffs can be represented by ICI s benzodifuranones, which give fashionable red colours to synthetic fabrics like polyesters. 

Q O Indigo, Ci6Hi0N2O2, is the common name of the dye that gives blue jeans their characteristic colour. Calculate the mass of oxygen in 25.0 g of indigo. 

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