Sodium 4-((4-((4-amino-3-methylphenyl) (hydroxy) (4-(phenylamino) phenyl)methyl) phenyl) amino) benzenesulfonate
Soluble in water, alkali media
Alkali Blue is a pH indicator. Alternative names are Acid blue 119. It is one of the alkali-soluble triphenylmethane dyes that are essentially sodium salts of mono sulfonic acids of phenylated pararosaniline and are used chiefly in making printing inks. A class of blue pigment powders that are prepared from fuchsin, a synthetic red dye. By weight, alkali blue dyes have the highest tinting strength of any blue pigment
Used as a pH Indicator. It is a formidable stain for staining of proteins. Also used as a pigment for printing ink preparations. Also used for printing on acrylic fibres, paper and textile.