Bismarck brown G and

Disazo and Polyasso Dyes from Diamines Bismarck Brown G and R... 

A 0.2 g Coomassie Brilliant Blue R250 are dissolved in 40 ml methanol or non-denaturated ethanol then 10 ml glacial acetic acid are added and the solution is filled up to 100 ml with deionized water. Stable at RT B 0.05 g Bismarck Brown R are dissolved in 40 ml methanol or non-denaturated ethanol then 10 ml glacial acetic acid are added and the solution is filled up to 100 ml with deionized water. Stable at RT. 

Some of the earliest dyes prepared by this reaction were Bismarck Brown In 1865, and Chrysoidine G in 1876. The latter is very simple in structure and was obtained by coupling diazotized aniline with w-phenylenediamine... 

Solvents 1—3 in Table 128 are suitable for separating bismarck-brown (C. I. 21000) and other basic azo dyes [61, 83]. The triphenylmethane dyes, malachite green (C. I. 42000) and methyl violet (C. I. 42535) have been separated with solvent 4 [62]. Fuchsine (C. I. 42510), rhodamine B (C. I. 45170) and rhodamine 6G (C. I. 45160) can be separated with solvent 5. Rhodamine B, malachite green, crystal dolet (C. I. 42555), methylene blue (C. I. 52015) and Victoria blue B (C. I. 44045) have been separated with solvent 7, using silica gel layers on microscope slides [49]. Many basic dyes of the xanthene class which are used for histological staining, e. g.. Acridine Red 3B (C. I. 45000), Pyronine G (C. I. 45005), rhodamine S (C. I. 45050), rhodamine G (C. I. 45150) and rhodamine B, can be separated with solvents 8—10 [78]. Numerous subsidiary conta-... 

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