The Natural Organic Colouring Matters
By
Arthur George Perkin, F.R.S., F.R.S.E., F.I.C., professor of colour chemistry and dyeing in the University of Leeds
and
Arthur Ernest Everest, D.Sc., Ph.D., F.I.C., of the Wilton Research Laboratories; Late head of the Department of Coal-tar Colour Chemistry; Technical College, Huddersfield
Longmans, Green and Co.
39 Paternoster Row, London
Fourth Avenue & 30th Street, New York
Bombay, Calcutta, and Madras
1918
Kaikki kuvat (kemialliset kaavat) puuttuvat // None of the illustrations (of chemical formulas) included.
The bark, and more especially the roots, of the C. grandiflora, C. linariifolia, and C. areolata, which belong to the natural family of the Rubiaca, and are widely distributed in New Zealand, possess tinctorial property (Aston, New Zealand, J. Sci. Tech.,1918, 1, 3), and being related to madder probably contain either alizarine itself or an allied colouring matter. Thus an alcoholic extract of the C. grandiflora is coloured purple by alkali, and becomes yellow on addition of acid. From the acid solution, by means of ether, an orange-yellow crystalline substance can be isolated in small amount.
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