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The chemistry of the coal-tar colours (1886)

Benedikt, Rudolf, 1852-1896, Knecht, Edmund, 1861-1925 · London : G. Bell and Sons · leaf 251

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241 ATJZARIN. … CH Alizarin-blue is therefore the quinoline of alizarin. It contains both hydroxyl groups of alizarin unchanged, and is therefore an acid. On the other haud, however, the quinoline complex imparts basic properties to the com- pound, and alizarin-blue will therefore combine with acids to form…

Coal-tar colors

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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