Basic Rhodamine B | Amar Colour Chem India

Basic Rhodamine B

Alias: Rhodamine B ; alkaline Peach (diluted post-trade name); Basic Fluorescent Red 8B

Color Index No. :

C. I. Basic Violet 10 (45170)

Structural Formula:

Characters:
Bright green flash of small crystalline powder. Soluble in water and alcohol (the Blu-ray fluorescence was red with a strong solution), soluble in solvent fiber, slightly soluble in acetone. Case of concentrated sulfuric acid was yellow-brown, with a strong green fluorescence. Diluted was big red and orange. Case of concentrated nitric acid was golden brown. Its aqueous solution was added sodium hydroxide solution heated Rose Red villous precipitation. Add hydrochloric acid slightly green crystals separated.

Quality Q/HG2-1465-80

Index Name	Indicators
Appearance Strength Shade Impurities insoluble in water% Fineness (through 20 mesh sieve residue content)%	Bright green flash crystalline powder As the standard of 100 ± 3% With the standard approximation ≤1 All through

Uses:
Used for dyeing acrylic, PH 2.5 ~ 5.5 when the shade stability and silk dyeing carried out in acetic acid solvent for tannin mordant dyeing of cotton fiber dyeing, color fastness is poor. Mainly for the paper industry glazed paper, typing paper, gloss paper; and the role of phosphotungstic acid-generating precipitation of copper, used to make paints, painting pigments; also be used for hemp, straw and leather dyeing.