Composition: Potassium bismuth iodide solution Preparation: Solution A: Bismuth subnitrate in acetic acid; Solution B: Potassium iodide in water Physical State: Orange-red solution Storage: Stable for 6 months at room temperature in amber bottle Use: Detection of alkaloids, gives orange precipitate

Bismuth Content: 8-10 mg/ml as Bi Potassium Iodide: 20-25% w/v Acetic Acid: 10-15% v/v Appearance: Orange-red clear solution Sensitivity: Detects 0.1 μg of alkaloids Precipitation Test: Forms orange precipitate with alkaloids pH: 2.5-3.5 Specific Gravity: 1.15-1.25 Stability: Stable for 6 months at room temperature in amber bottle Performance: Satisfactory for TLC spraying (1:1 dilution with water)