The best approach to stained leather upholstery depends on the kind of stain, how long it’s been in place, and the type of ...

Kcechlin, these fibers may be dyed in a solution made of—water, 20to 30 parts ; chlorate of potassa, 1 part; sal ammoniac, 1 part; chloride of copper, 1 part; Aniline, 1 part, and hydrochloric ...

This dye, called murexide, created a great sensation, but its use was of short duration, as a more vivid and more easily applied tint was about this time obtained from aniline, and the murexide ...

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 ...

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 ...