Sodium Nitrite AR Grade is a chemical agent commonly used in laboratory and industrial applications. CAS 7632-00-0 EC 231-668-3

| Product Name        | Sodium Nitrite              |
| Specification       | Analytical Grade            |
| Batch Number        | 2023100901                  |
| Molecular Formula   | NaNO2                       |
| Molecular Weight    | 69.00                       |
| Batch Size          | 820kg                       |
| Testing Unit        | Production Department       |
| Sample Category     | Inorganic                   |
| Report Date         | October 11, 2023            |
| Testing Standard    | GB/T633-1994                |

| Test Item           | Standard Requirement        | Test Result     |
|---------------------|-----------------------------|-----------------|
| Content, %          | ≥99.0                       | 99.4            |
| Appearance          | White or pale yellow crystals| Pale yellow crystals |
| Clarity Test        | Pass                        | Pass            |
| Insoluble Residue, %| ≤0.002                      | 0.0009          |
| Chloride (Cl), %    | ≤0.005                      | ＜0.005          |
| Sulfate (SO4), %    | ≤0.005                      | ＜0.005          |
| Potassium (K), %    | ≤0.001                      | 0.0004          |
| Calcium (Ca), %     | ≤0.005                      | ＜0.005          |
| Iron (Fe), %        | ≤0.0005                     | ＜0.0005         |
| Heavy Metals (as Pb), % | ≤0.0002                 | ＜0.0002         |

Analysis Conclusion:
Meets the requirements of GB/T633-1994 for Analytical Grade.