Lissamine fast yellow

Lissamine fast yellow (LFY) dye was purchased from Sigma-Aldrich Company (India) and was used as received. All chemicals used were of AR grade. The photocatalyst ZnO used in the study obtained from Merck was about 99% pure. All solutions were prepared in double-distilled water. The chemical stmcture of LFY is given in Fig. 2. 

Lissamine Flavine FF Lissamine Fast Yellow 20 Naphthalene Orange G Croceine Scarlet 3B Lissamine Fast Red BG Ultralan Yellow R Coomassie Yellow 7G Ultralan Red B Coomassie Milling Scarlet 5B... 

Synonyms Cl 18965 2,5-Dichloro-4-(4,5-dihydro-3-methyl-5-oxo-4-((4-sulfophenyl) azo)-1H-pyrazol-1-yl) benzenesulfonic acid, disodium salt Lissamine fast yellow Yellow 2G... 

Lisadimate. See Glyceryl PABA Lisato RNA. See Hydrolyzed RNA Lissamine fast yellow. See Acid yellow 17 Lissamine green B. See Acid green 50 Listab 28. See Lead stearate Listab 51. See Lead stearate, dibasic Listab Ba. See Barium stearate Listab Ca. See Calcium stearate Listab Cd. See Cadmium stearate Listab Zn. See Zinc stearate Lite . See Sodium carbonate Lite-R-Cobs . See Com (Zea mays) cob meal Litesse // Litesse . See Polydextrose... 

Particularly bright pinks require Lissamine Rhodamine G (C.I. acid red 50) or Lissamine Rhodamine B (C.I. acid red 52), and for extremely vivid yellows Lissamine Flavine FF (C.I. acid yellow 7) is used. Most of the dyes in this group can be used in combination with each other in shades where mixtures are necessary for matching. With the fast acid dyes it is not so easy to match shades with mixtures. Their tendency is towards uneven adsorption, and if the distribution of two or more components is not uniform, the differences in tone of the colour are much more apparent than equivalent differences in depth. The best results are, therefore, obtained by selecting a self-colour which matches the pattern or, if this is impossible, one which is so close that only a very small proportion of another dye is necessary. 

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