Formula: C₄H₄N₂O₂ CAS: 66-22-8 EC No.: 200-621-9 M (Molar Mass): 112.09 g/mol mp (Melting Point): >300°C (decomposes) Appearance: White crystalline powder.

Assay (HPLC): ≥ 99.0 % Appearance: White powder. Identification (UV): λmax ~259 nm in water. Solubility: Slightly soluble in water, soluble in alkali. Loss on Drying: ≤ 0.5 % Residue on Ignition: ≤ 0.1 % Heavy Metals (as Pb): ≤ 10 ppm