| Technical specification | Products Special grade | Products First grade |
| Whiteness ≥ | 95.0 | 90.0 |
| L.O.I. (600~700℃) ％ ≤ | 1.50 | 2.00 |
| Acid solvable material ％ ≤ | 1.50 | 2.00 |
| Water solvable material ％ ≤ | 0.10 | 0.20 |
| Acid-alkali | Litmus paper appears neutral reaction | |
| Molysite | To show blue late | |
| Moisture％ ≤ | 0.2 | 0.5 |
| Arsenic (As) ％ ≤ | 0.0003 | |
| Lead ％ ≤ | 0.001 | |
| Pb ％ ≤ | 0.004 | |
| Bacteria each/g | 100 pathogenic bacteria mustn’t be inspected out. | |
| Passing through ％≥ | 38µm 98.0 | |
| 45µm 98.0 | ||
Note: 1. The pathogenicbacteria are mainly directed at colon bacillus, staphylococcus and greenpusbacillus.
2. The special grade is better than CPstandard (version number 2000), and the first grade conforms to
USP standard.