Formula: C₉H₈O₄ CAS: 50-78-2 EC No.: 200-064-1 M (Molar Mass): 180.16 g/mol mp (Melting Point): 135°C (slight decomposition) Appearance: White crystalline powder

Assay (by titration): ≥ 99.0%. Appearance: White crystalline powder, odorless or with faint acetic acid odor. Melting Range: 134-136°C. Loss on Drying: ≤ 0.5% (at 105°C for 2 hours). Residue on Ignition: ≤ 0.05%. Free Salicylic Acid: ≤ 0.1%. Chloride (Cl): ≤ 0.01%. Sulfate (SO₄): ≤ 0.02%. Heavy Metals (as Pb): ≤ 10 ppm. Related Substances (HPLC): Total impurities ≤ 0.5%. pH (saturated solution): 3.0-4.0. Solubility: Slightly soluble in water, freely soluble in ethanol.