1-AMINO-2-NAPHTHOL-4-SULFONIC ACID LR remains in its solid form at 20 degree C temperature. This chemical is light sensitive and its molar mass is 239.25. Its purity level is more than 97%. It is required for processing of redox indicator, xylenlol orange and antioxidants. Approximate density of 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID LR is 1.4338 and its refractive index is around 1.6500. This chemical is insoluble in water. Its chemical properties remain unaffected even when it exposes to acid anhydrides, acid chlorides and strong oxidizing factors.