At the time he was a student, the German dye industry was thriving, and new aniline dyes were available for tissue staining. He found that different cells held different dyes. He used this ...

With dyes like Red 40 and Yellow 5 coloring everything from cereals to energy drinks, concerns are mounting over potential ...

William Henry Perkin discovered the first organic dye, mauve or aniline, in 1856. Thousands of dyes have been discovered since then. Synthetic dyes cost less, offer a vast range of colors, and impart ...

Mercifully, this isn’t a recipe for a particularly revolting folk remedy. In fact, it’s the ingredients for paper – as it was made in ancient China, that is. At the time of its invention ...

Mr. Perkins' process is as follows :— He dissolves in water the sulphates of aniline, of cuminine, and of toluidine, and adds sufficient bichromate of potash to neutralize the sulphuric acid in ...

and it was estimated that the dye industry contributed £3.8 billion to GDP in 2007, while supporting 69,000 jobs. Perkin would have performed a combustion analysis, so he knew that aniline contained ...

If you’re going from blonde back to black, you really need to leave the dark dye on for a long time. Otherwise, when it ...

It was the beginning of aniline dyes. After mauveine, the number of synthetic dyes quickly increased in a quest for relatively stable, lightfast and washfast formulations. By the end of the 19 th ...

fine-art paper making can encompass everything from producing sheets of high quality printmaking paper to pulp painting—where the artist dyes paper pulp and creates a unique piece of art from paper ...

Pull-up leather is made using aniline dyes that can't mask the hide's natural grain and thus require top-quality leather for the process. Frye also uses Goodyear welting so the boots can be easily ...

One of Memphis' largest employers plans to lay off hundreds of workers. International Paper will lay off 650 employees company-wide, with 400 of those in Memphis — about 19% of its workforce here.