Formula: H₂NC₆H₄OH CAS: 591-27-5 EC No.: 209-711-2 M (Molar Mass): 109.13 g/mol mp (Melting Point): 122-124°C bp (Boiling Point): 164°C (11 mmHg) Appearance: White to light brown crystalline powder

Assay (HPLC): ≥ 99.0%. Appearance: White to light brown crystalline powder. Melting Range: 122-124°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 ≤ 1.0%. 2-Aminophenol: ≤ 0.2%. 4-Aminophenol: ≤ 0.2%. Phenol: ≤ 0.2%. Solubility: Soluble in water, ethanol, ether. pH (saturated solution): 6.0-7.0.