Formula: C₇H₇NO₂ CAS: 99-05-8 EC No.: 202-724-8 M (Molar Mass): 137.14 g/mol mp (Melting Point): 174-176°C Appearance: Light yellow to brown crystalline powder

Assay (by titration): ≥ 98.0%. Appearance: Light yellow to brown crystalline powder. Melting Range: 174-176°C. Loss on Drying: ≤ 0.5% (at 105°C for 2 hours). Residue on Ignition: ≤ 0.1%. Heavy Metals (as Pb): ≤ 20 ppm. Chloride (Cl): ≤ 0.02%. Sulfate (SO₄): ≤ 0.02%. Related Substances (HPLC): Total impurities ≤ 2.0%. Benzoic Acid: ≤ 0.5%. 4-Aminobenzoic Acid: ≤ 0.5%. Solubility: Slightly soluble in water, soluble in ethanol, ether. pH (saturated solution): 4.0-5.0.