Phloxine B

English Name: phloxine B;

Other names: Acid Red 92; Fluorescent Pink; Tetrabromotetrachlorofluorescein; Flame red B; Heather red; Rose red; Flame red dye B; Marked red; 2 ', 4', 5 ', 7' - tetrabromo-4,5,6,7-tetrachloro-3 ', 6' - dihydroxy spiro [isobenzofuran-1 (3H), 9 '- (9h) tons] - 3-one; Red 28

CAS No.: 18472-87-2

C20H2Br4Cl4Na2O5=829.63

Grade: ar

Content: ≥ 80.0%

λ Max: 536 ~ 540nm (0.02 mol/l ammonium acetate solution)

Drying loss: ≤ 10.0%

Physicochemical Properties: brick red or brownish red to dark brown powder. The blue red solution dissolved in water has slight dark green fluorescence, and the blue red solution dissolved in ethanol has brick red fluorescence. When heated in hydrochloric acid, a brownish yellow precipitate is generated, a blue precipitate is generated in sodium hydroxide, and a yellow solution is generated in concentrated sulfuric acid. It does not change when heated, and a yellow red precipitate is generated when diluted.

Purpose: biochemical research. Biological staining. Adsorption indicator. Fluorescent indicator. Determination of mercury. For mallory's Fluorescent Pink methylene blue staining; Kreyberg's method for keratin and mucus

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