Formula: C₁₅H₁₀O₇·2H₂O CAS: 654055-01-3 (dihydrate); 480-16-0 (anhydrous) EC No.: 207-560-5 (anhydrous) M (Molar Mass): 338.27 g/mol (dihydrate) D (Density): ~1.0 g/cm³ (approx.) mp (Melting Point): 285-290 °C (dec., anhydrous) bp (Boiling Point): Not applicable Optical Rotation: Not applicable

Assay (UV-Vis): ≥ 96.0 % (Morin) Appearance: Yellow to greenish-yellow crystalline powder. Identification (Fluorescence): With Al³⁺ ions, produces intense green fluorescence under UV light. Solubility (in Ethanol): Passes test (yellow solution, fluorescent). Loss on Drying: 8.0 - 12.0 % (corresponding to dihydrate) Suitability as Fluorescent Indicator: Complies with test for aluminum detection.