C.I. Basic Green

Cationic dyes form positively charged dye ions by dissociation, and the positive electric charge is delocalized over the entire molecule. They are usually di- and triarylmethine dyes such as C.I. Basic Green 4, 42000 [569-64-2] (31), which are also known as triarylmethane dyes or triaryl carbenium ions [15], oxazine dyes such as C.I. Basic Blue 3, 51005 [2787-91-9] (32), orthiazine dyes. 

Triphenylmethane dyes are usually prepared in two steps 1) condensation of an N,N-dialkylaniline with a benzaldehyde compound and 2) oxidation of the resultant leuco base (27). The synthesis of C.I. Basic Green 4 (Malachite Green) is given as an example in Fig. 13.106. Alternatively, C.I. Acid Green 50 is prepared in three steps 1) condensation of... 

C.I. basic green 5 C.I. basic blue 25 C.I. BASIC blue 24... 

Perchlorates, with the dye Brilliant Green (C.I. Basic Green 1), form a colored compound which can be extracted with benzene and its homologues. Chlorates give compounds which are not extractable. Strong oxidants such as chromates, nitrates or nitrites interfere. ... 

Phenylmethylene)bis[N, -dimethylbenzenamine], 9CI. 4,4 -Benzylidenebis[N,l> -dimethylanilme], SCI. 4,4 -Tetramethyldiaminotriphenylmethane. Leuco-malachite green. 4,4 -Di dimethylamino)tritane. C.I. Basic green 4 leuco base [129-73-7]... 

C.I. Basic green I. C.I. 42040. Malachite green G. Diamond green. Ethyl green. Emerald green... 

N-[4-[[4- Dimethylamino)phenyl phenylmethylene]-2,5-cyclohexadien l-ylidene]-N-methylmethanaminium l-h). C.I. Basic green 4. Aniline green. China green. Diamond green B. Victoria green B. C.I. 42000 [569-64-2]... 

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