Ponceau 2R / poppy red R / poppy red 2R / Ponceau G / acid scarlet / xylidine Ponceau

English name：Ponceau 2R；Ponceau G ；Ponceau R ；Ponceau dexylidine；Xylidine ponceau 3KS；Scarlet R；m-Xylene-4,1-azo-2-naphthol-3,6-disulfonic acid sodium salt；C.I. 16150 

Other names: poppy red R; Poppy red 2R; Fuchsia g; Acid scarlet; Acid scarlet; Xylene amine Ponceau; Fuchsia C; 4 - [(2,4-xylyl) azo] - 3-hydroxy-2,7-naphthalene disulfonic acid disodium salt; Acid red 26; Phenylazo-8-acetanilide-1-naphthol-3,6-disulfonic acid sodium salt; Acid azo red

CAS No.: 3761-53-3

C18H14N2Na2O7S2=480.43

Grade: high purity grade

Biological staining test: qualified

Maximum absorption wavelength: 503 (388) NM

Physicochemical properties: dark red powder. It is soluble in water as a reddish brown to red solution, slightly soluble in ethanol and acetone, and insoluble in other organic solvents. In case of concentrated sulfuric acid, it is cherry red to rose red. When diluted, it is yellow red. Its aqueous solution is added with concentrated hydrochloric acid to produce red precipitate. LD50 (mouse, abdominal cavity) 2000mg / kg. Carcinogenic possibility

Purpose: biochemical research. Biological staining; Histochemical contrast dye; Analysis and verification of silver

Saving: RT