Ultramarine blue, or "true blue," was once more valuable than gold. In 1824, a synthetic version called French ultramarine made the color more accessible. But ultramarine blue made from real lapis ...
FILE - Bottles containing a variety of colored liquids sit on a shelf in a lab at Sensient Technologies Corp., a color additive manufacturing company, in St. Louis ...
U.S. regulators said Friday that they would allow three new color additives made from natural sources to be used in the nation's food supply. It comes after health officials pledged a sweeping ...
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