7-amino-4-hydroxy-2-naphthalenesulfonic acid,Amino

J Acid(2-Amino-5-naphthol-7-sulfonic acid) The dry of J-acid is grey powder, difficultly soluble in water. Easily soluble alkali-creating correspondence salt. The liquid of its’ sodium salt is blue fluorescence. It’s the chlorine compound of J acid is acicular yellow crystal, soluble in water, can be coupled to purple dyes by itself when in the sodium carbonate solution.Structural formula Formula Weight: 239.25Molecular Formula: C10H9NO4SUsage: J acid is one of the important dyestuff intermediates. It is used for production many dyes as the material, such as direct copper blue 151,direct scarlet 23, reactive Brown K3R, carbonyl-j-acid and Bis-J-Acid etc.Product quality standardsIndexSpecificationAppearancegrey to light brown powderPurity(HPLC) % ≥90.0Purity(HPLC),% ≥97.0Γ Acid- Calculation by 100% J acid % ≤1.5Bis J Acid- Calculation by 100% J acid % ≤0.2 If you have any inquiry ,please kindly contact us