Formula: C₁₄H₁₂N₂·HCl (Monohydrate common) CAS: 29770-96-3 EC No.: 607-655-2 M (Molar Mass): 244.72 g/mol (HCl salt) D (Density): ~1.0 g/cm³ (approx.) mp (Melting Point): >300 °C (dec.) bp (Boiling Point): Not applicable Optical Rotation: Not applicable

Assay (HPLC): ≥ 99.0 % (as hydrochloride) Appearance: White to pale yellow crystalline powder. Identification (Color Test): Forms orange complex with Cu(I) ions. Solubility (in Water): Clear, colorless to slightly yellow solution. pH (1% Solution): 3.0 - 5.0 Loss on Drying: ≤ 2.0 % (may include water of hydration) Suitability for Copper Assay: Complies with test.