Palatine fast dyes

Premetallized Dyes. Although discovered in 1912, the 1 1 chromium complexes known as Palatine Fast (BASF) and Neolan (Ciba) dyes had httie practical use as wool dyes until 1920 when it was found that a strongly acidic dyebath (pH ca 2.0) (51) was requited to obtain satisfactory dyeing and acceptable fastness properties. Dyes of this type exemplified by Neolan Blue 2G [6370-12-3] (57) (Cl Acid Blue 158A Cl 15050) are stiU in use despite the damage to the wool caused by the strong acid in the dyebath. 

Aqueous solutions of dyes ean also be employed instead of water. In the ease of hydrophilic dyes such as methylene blue or patent fast blue the transparent background of the TLC/HPTLC plate is stained blue. Pale spots occur where there are nonwetted zones. Dauble [89] detected anion-active detergents in this way on silica gel layers as pale zones on a blue background with palatine fast blue GGN... 

Marketing of 1 1-chromium complex dyes as Palatin Fast serie (BASF) and Neo-Ian serie (Ciba)... 

Palatin . [BASF BASF AG] Fast dyes for coloring cleaners, textile dyeing and printing. 

Meckel and co-workers [42] have succeeded in separating the substantive wool dyes Benzyl Fast Red 6RG (C. I. 22245), Palatine Fast... 

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