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Some Preliminary Observations on the Catalytic Fading of Dye Mixtures
Author(s) -
Asquith Raymond S.,
Ingham Peter
Publication year - 1973
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.1478-4408.1973.tb03132.x
Subject(s) - impurity , fading , catalysis , chemistry , ethyl acetoacetate , derivative (finance) , sodium salt , salt (chemistry) , sodium , nuclear chemistry , inorganic chemistry , organic chemistry , telecommunications , decoding methods , computer science , financial economics , economics
The ‘catalytic fading’ of C.I. Acid Violet 4 in the presence of C.I. Acid Yellow 112 has been investigated in solution, on films and on fibres. Trace amounts of an impurity have been isolated from C.I. Acid Yellow 112. This impurity has been shown to fade C.I. Acid Violet 4 catalytically. Examination of the impurity and comparison of its properties with those of the sodio derivative of ethyl acetoacetate suggest that it is a β‐ketonic acid derivative present in part as an enolic sodium salt.