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| Items |
Specifications |
| Appearance: |
White or almost white crystalline powder |
| Identification: |
positive reaction |
| Clarity and color of solution: |
Should be clear and colorless |
| Color of solution: |
No more than solution Y7 or GY7 |
| PH: |
2.7 °C 3.3 |
| Sulfates: |
300 ppm max |
| Nitrates: |
None |
| Heavy metals: |
20 ppm max |
| Absorbance of solution: |
0.025 max |
| Chromatographic purity: |
1% max |
| Loss on drying: |
5.0% max |
| Residue on ignition: |
0.10% max. |
| Assay: |
98.5 °C 101.5% |
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