| Property | Specification | Test Method |
|---|---|---|
| Assay (KHCO₃) | ≥ 99.0% | Acid-Base Titration (e.g., USP, Ph. Eur.) |
| Appearance | White, crystalline powder | Visual |
| Solubility (10% aq. solution) | Clear and colorless | Gravimetry |
| pH (1% aq. solution) | 8.0 – 8.5 | Potentiometric Measurement |
| Chloride (Cl) | ≤ 0.01% | Ion Chromatography |
| Sulfate (SO₄) | ≤ 0.02% | Ion Chromatography |
| Iron (Fe) | ≤ 0.001% | Atomic Absorption Spectroscopy (AAS) |
| Heavy Metals (as Pb) | ≤ 0.001% | AAS |
| Sodium (Na) | ≤ 0.5% | Flame Emission Spectroscopy (FES) |
| Loss on Drying | ≤ 1.0% | Gravimetry |
