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 ...

The Minnesota Legislature is considering a bill banning the use of coal tar-based products, and the League of Minnesota Cities has advised local governments to develop ordinances prohibiting or ...

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 ...