Description 1-Naphthol, Reagent, 99.7%, 100g For Research & Development Not for drug, clinical use in humans, for food or food additive use Certificate of Analysis:Appearance (Color) Light purpleAppearance (Form) Crystalline powder Iron 0.0007% Chloride 0.004% Heavy Metals <0.001% 2-Naphtol <0.2% Naphthalene <0.2% Water 0.1% Sulfated Ash 0.009% CAS: 90-15-3 FORMULA: C10H8O