Phthalic Anhydride
Description:
No | Items | Unit | Standard Specs | Testing Results |
A | Content | % | ≥99.5 | 99. 89 |
B | Melt colour | Pt/Co | ≤20 | 10 |
C | Heating colour | Pt/Co | ≤50 | 31 |
D | Appearance |
- | White flake or crystalline powder | Passed the test |
E | Sulfuric acid colour | Pt/Co | ≤40 | 25 |
F | Solidification point | ≥130.5 | 131.0 | |
G | Free acid | % | ≤0.2 | 0.02 |
H | Conclusion | Qualified | ||