Orange IV / No. 4 Orange / acid yellow D / acid No. 4 Orange / Golden Lotus orange OO
Item No.： SR0075-1
Store at： RT
English name：Orange IV；Diphenylamine orange；Acid yellow D；Resorcin yellow OO；Tropaeolin OO；Sodium(potassium) p-diphenylaminoazobenzenesulf
Other names: No. 4 orange; Acid yellow D; Acid orange No. 4; Jinlian orange OO; Golden orange IV; Diphenylamine yellow; 4 - [[4 - (phenylamino) phenyl] azo] benzenesulfonic acid monosodium salt; Sodium diphenylazobenzene sulfonate; Acid orange IV
CAS No.: 554-73-4
C18H14N3NaO3S=375.38
Grade: ind
PH discoloration range: 1.4 (red) ～ 3.2 (yellow)
Loss on drying: ≤ 4.5%
Water dissolution test: acceptable
Burning residue: 20.0 ～ 22.5%
Physicochemical properties: orange yellow flake crystal or yellow powder. Soluble in water and ethanol solution, yellow
Purpose: biochemical research. Acid base indicator. Indicator for non-aqueous solution titration to analyze calcium and magnesium. A mixed indicator was formed with the complex indicator chrome black T to improve the sensitivity of the latter to color change
Saving: RT
