Understanding Coal Tar dyes in Food: Facts and Controversies Food colouring and other additives derived from coal tar have come in for some bad press recently. Hugh Westbrook delves into the ...

As we get ready to celebrate Earth Day on April 22, you might ask yourself, “What can I do to protect the environment?” Any time you’re doing things around the house is a good time to ask ...

These colors, for there are many of them, have been prepared from the alkalies of coal tar by Messr3. W. Perkins and A. H. Church, two rising discoverers, and have been called by them nitroso ...