Formula: α-Naphthol in Ethanol CAS: N/A (Mixture) EC No.: N/A (Mixture) M (Molar Mass): N/A (Solution) D (Density): ~0.9 g/cm³ (ethanol-based) mp (Melting Point): Not applicable bp (Boiling Point): Not applicable Optical Rotation: Not applicable

Assay: Complies with sensitivity test for carbohydrates. Appearance: Clear, colorless to pale yellow solution. Sensitivity Test: With a 1% glucose solution, followed by careful addition of conc. H₂SO₄, produces a distinct violet ring at the interface. Composition: Typically a 10-20% (w/v) solution of α-naphthol in ethanol (95% or absolute). Storage Stability: Should remain clear; discard if a brown color develops.