Amaranth/Acid Red 27/Bordeaux/Fast red；Azo-rubin S

English Name: amaranth; Acid Red 27； Bordeaux； Fast red； Azo-rubin S

Other names: Acid Red 27; Naphthol red; Azomagenta s; 1- (4 '- sulfo-1' - naphthylazo) - 2-naphthol-3,6-disulfonic acid trisodium salt; Cockscomb scarlet; Blue acid red; P-sulfonylnaphthalene azo-r-salt; Edible pigment red No. 2; Acid amaranth; Food red 9

CAS No.: 915-67-3

C20H11N2Na3O10S3=604.47

Grade: BS

Content: ≥ 85.0%

Infrared spectrum identification: match with the reference substance

Physicochemical Properties: dark reddish brown powder. Soluble in water, glycerin, propylene glycol and hydrochloric acid, the aqueous solution is rose red, slightly soluble in ethanol. Hydrochloric acid does not change the aqueous solution of this product, sodium hydroxide darkens the color of this product, sulfuric acid is purple solution for this product, blue purple when diluted, and then magenta. The relative density is about 1.50

Purpose: biochemical research. Redox indicators, such as indicators for titrating trivalent arsenic, antimony and hydrazine. Coloring of food, drugs and cosmetics, and cell staining in tissue culture. Color micrograph. Dyeing of wool and silk

Save: RT, away from light