Premium
Determination of the Migratory Properties of Direct Dyes
Author(s) -
Cegarra José
Publication year - 1957
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1957.tb02208.x
Subject(s) - electrolyte , chemistry , chromatography , electrode
The effects have been studied of four variables—temperature, electrolyte concentration, liquor ratio, and agitation—on the migration of direct dyes selected from Classes A, B, and C. At low temperatures increase of temperature has a more favourable influence with Classes A and B than with Class C. An optimum electrolyte concentration for maximum migration is shown by dyes of Classes A and B, but with Class C the migration diminishes steadily as the electrolyte concentration is increased. Increase in liquor ratio increases migration of B and C dyes, but not that of A dyes. Agitation increases migration in all cases.