Complex formation in concentrated sulfuric acid between boric acid and quinalizarin or alizarin |
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Authors: | FJ Langmyhr A Holme |
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Institution: | University of Oslo, Chemical Institute A, BlindernNorway |
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Abstract: | The complex formation in concentrated sulfuric acid between boric acid and quinalizarin (1,2,5,8-tetrahydroxyanthraquinone) or alizarin (1,2-dihydroxyanthraquinone) was studied by spectrophotometry. Both systems contained only one species, viz. a complex between one boric acid and one hydroxyanthraquinone molecules. The reactions of boric acid with hydroxyanthraquinones are discussed and compared with the reaction of boric acid with 1,1'-dianthrimide. |
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