Century Dictionary and Cyclopedia
- n. A coal-tar color (C14H5O2(OH)3) used in dyeing, closely allied to alizarin, formed by heating beta-anthraquinon disulphonic acid with caustic soda and potassium chlorate. It is sold in commerce under the name of alizarin, and produces the yellow shade of red, while true alizarin gives bluish shades of red. Also called
- n. organic chemistry 1,2,7-trihydroxyanthraquinone
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