Stable Diazo Printing Colors and a New Explanation of the Constitution of Diazo Compounds
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A paper by Dr. W. Sieber, read at the Twelfth Congress of the International Society of Chemists and Colourists in Carlsbad, on stabilizing diazo printing colours used with beta-naphthol prepares on cotton. He reports that boric acid and tungstic acid can replace acetic acid, gives recipes for preparing the stable diazo colours from p-nitraniline, m-nitraniline or p-nitro-o-anisidine, and compares dissociation constants of the acids. The second half proposes a new explanation of the constitution of diazo compounds, arguing that nitrous acid first forms an addition (molecular) compound with the amine rather than a condensation product.
- Type
- Article
- Date
- 1929
- Language
- English
- Pages
- 5
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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