Sodium Fluoride is an inorganic compound used in various applications including water fluoridation and dental care products.CAS Number: 7681-49-4 EC Number: 231-667-8

| **Test Item**                    | **Specification** | **Measured Result** |
|----------------------------------|--------------------|----------------------|
| Content (%)                      | ≥98.0              | 99.4                 |
| Appearance                       | White powder       | White powder         |
| Clarity Test / No.               | Pass (≤4)          | Pass                 |
| Insoluble Matter in Water (%)    | ≤0.05              | 0.03                 |
| Acidity (as H⁺) mmol/100g        | ≤5.0               | 0.2                  |
| Alkalinity (as OH⁻) mmol/100g     | ≤2.0               | Not Detected          |
| Chloride (Cl) (%)                | ≤0.005             | <0.005               |
| Sulfate (SO₄) (%)                | ≤0.03              | <0.03                |
| Fluorosilicate (as SiF₆) (%)      | ≤0.6               | <0.6                 |
| Iron (Fe) (%)                    | ≤0.005             | <0.005               |
| Heavy Metals (as Pb) (%)          | ≤0.003             | <0.003               |

**Analysis Conclusion:** Meets the requirements for analytical purity as per GB/T1264-1997.