Acid fuchsin / fuchsin / fuchsin s / acid violet 19 / Fuchsin Acid

English name：Fuchsin acid；Acid Violet 19；Rubin S；Acid magenta；Acid roseine；Acid fuchsin；Acid rubin ；Sodium salt of rosaniline trisulfonic acid；C.I.42685 

Other names: Fuhong; 2-amino-5 - [(4-amino-3-sulfophenyl) (4-imino-3-sulfo-2,5-cyclohexadiene-1-yl) methyl] - 3-methylbenzenesulfonic acid disodium salt; Magenta s; Acid violet 19

CAS No.: 3244-88-0

C20H17N3Na2O9S3=585.54

Grade: BS

Dyeing test: qualified

Absorbance specific ABS a (1% / 1cm): > 700（ λ max.)

Physicochemical properties: dark red powder with green metallic luster or olive to dark olive green coarse powder or small pieces. It is a mixture of sodium salt of rosaniline disulfonic acid, sodium salt of trisulfonic acid and ammonium salt. 1g is dissolved in 7ml water and slightly soluble in ethanol. The dilute aqueous solution is purplish red, and the extremely dilute aqueous solution (1:10000) is dropped into the concentrated sodium hydroxide solution to fade, but it does not fade to the concentrated hydrochloric acid. And the pH from red to colorless is 12 to 14. The maximum absorption wavelength is 540-545nm (10mg / L, 0.01% hydrochloric acid), which is irritating

Purpose: biochemical research. Verification of free chlorine; Biological stain; Connective tissue staining; PH indicator

Saving: RT