Tropaeolin O sodium salt/4-([2,4-Dihydroxyphenyl]azo)benzenesulfonic acid sodium salt/Acid Orange 6

English Name: tropaeolin o sodium salt; 4-([2,4-Dihydroxyphenyl]azo)benzenesulfonic acid sodium salt； Acid Orange 6； Chrysoin； Resorcinol yellow

Other names: resorcinol sulfonic acid; Jinlian orange o; Acid orange 6; Golden Lotus orange; Resorcinol yellow; Sodium azoresorcinol sulfonate; Resin phenol yellow o

CAS No.: 547-57-9

C12H9N2O5SNa=316.27

Grade: ar

Infrared spectrum identification: qualified

PH color change range: 11.1 (yellow) ～ 12.7 (Orange)

Water dissolution test: acceptable

 Physicochemical properties: reddish brown to brown powder. It is golden yellow in water, soluble in ethanol, acetone and fiber dissolving agent, and insoluble in other organic solvents. There is no change when adding concentrated hydrochloric acid to the aqueous solution, and it is orange brown when adding concentrated sodium hydroxide.

Purpose: biochemical research. Biological staining

Saving: RT