Orange I / golden orange I / No.1 orange / acid orange I / No.2 red / gold powder

English name：Orange Ⅰ；α-Naphthol orange；Naphthalene orangeI；Sodium azo-α-naphtholsulfanilate；
α-Naphtholazobenzene-p-sulfonic acid sodium salt；C.I. 14600

Other names: golden orange I; No. 1 orange; Acid orange I; 4-hydroxynaphthalene azo sodium p-benzenesulfonate; 1-naphthylazo sodium p-benzenesulfonate; 4 - [(4-hydroxy-1-naphthyl) azo] benzenesulfonic acid monosodium salt; Orange yellow I; No. 2 red; Gold powder

CAS No.: 523-44-4

C16H11N2NaO4S=350.32

Grade: BS

Biological staining experiment: qualified

PH color change range: 7.6 (brown yellow) ～ 8.9 (purple red)

Physicochemical properties: reddish brown powder. Dissolve in water to form an orange red solution, and dissolve in ethanol to form an orange solution. Acids can precipitate its aqueous solution, and sodium hydroxide can increase the red color of its aqueous solution

Purpose: biochemical research. Acid base indicator and protein staining

Saving: RT