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| ITEMS | STANDARD | |
| Moisture (%) | ≤ 10% | |
| Viscosity(2% solutionB/mpa.s) | 3000-5000 | |
| PH value | 6.5-8.0 | |
| Chloride (%) | ≤ 1.8% | |
| Degree of substitution | 0.65-0.85 | |
| Heavy metals Pb% | ≤ 0.002% | |
| Iron | ≤ 0.03% | |
| Arsenic | ≤ 0.0002% | |