Sudan II / solvent Orange 7 / No. 2 Sudan Red / oil soluble scarlet / Sudan orange II

English name：Sudan Ⅱ；Fat ponceau；Solvent orange 7；Red B；Fast oil orange II；Oil scarlet；Sudan orange；C.I. 12140

Other names: 2,4-dimethylbenzene (1-azo-1) - 2-hydroxynaphthalene; 2,4-dimethylphenylazo-2 ′ - naphthol; Sudan No. 2; Oil soluble scarlet; Yellow light oil soluble orange; 1 - [(2,4-xylyl) azo] - 2-naphthol;  Sudan orange Ⅱ; 1-xylenyl diamine-2-naphthol

CAS No.: 3118-97-6

C18H16N2O=276.33

Grade: BS

Biological staining test: qualified

Physicochemical properties: brownish red luminous needle like crystal or powder. Soluble in ether (Orange), volatile oil, benzene, concentrated sulfuric acid, fat and oil, slightly soluble in ethanol, insoluble in water, alkali solution and weak acid. Melting point (glacial acetic acid crystallization) 166 ℃. The maximum absorption wavelength is 493 (420) nm. Irritating

Purpose: biochemical research. Biological staining agents, such as fat staining of central nervous tissue

Saving: RT