| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Toast almond colored to brown powder | Conforms |
| Sodium Sulfate | ≤5.0% | 2.70% |
| Insoluble substance | ≤0.10% | 0.04% |
| Calcium and magneium | ≤0.20% | 0.08% |
| Heatstability | ≥130 ℃ | 135.1℃ |
| Fineness | ≤5.0% | 3.10% |
| PH value | 7.0~9.0 | 8.0 |
| Dispersing force | ≥100% | 101.0% |
| Conclusion: The Product Conforms to Enterprise Standard. Chemical Name: Naphthalenesulfonic Acid |
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