| Property | Specification | Test Method |
|---|---|---|
| Assay (NH₄HCO₃) | ≥ 99.0% | Titrimetry |
| Appearance | White, crystalline powder | Visual |
| pH (1% solution at 25°C) | 7.0 – 8.5 | Potentiometry |
| Solubility in Water | 1 M at 20°C, clear, colorless | Gravimetry |
| Chloride (Cl⁻) | ≤ 50 ppm | Ion Chromatography |
| Sulfate (SO₄²⁻) | ≤ 50 ppm | Ion Chromatography |
| Additional Tests (Depending on Grade) | ||
| Iron (Fe) | ≤ X ppm | Atomic Absorption Spectroscopy (AAS) |
| Heavy Metals (as Pb) | ≤ X ppm | AAS |
| Loss on Drying | ≤ 0.5% | Loss on Drying at 105°C |
