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.
Nycanthes arbor-tristis (Linn.). This is a large shrub with rough leaves and sweet-scented flowers occurring in the sub-Himalayan and Tarai tracts; also in Central India, Burma, and Ceylon. The flowers open towards evening and fall to the ground on the following morning. The corolla tubes are orange coloured and give a beautiful but fleeting dye, which is mostly used for silk, sometimes in conjunction with "kusum" or turmeric, occasionally with indigo and kath (Watts, "Diet. Econ. Prod, of India," 1891, 5, 434).
[---]
For dyeing purposes the material (silk or cotton) is simply steeped in a hot or cold decoction of the flowers. The addition of alum and lime juice to the dye-bath is said to render the colour more permanent.
Ei kommentteja :
Lähetä kommentti