Test Item | Specification | Results | ||
Superior Grade | First Grade | Qualified Grade | ||
Appearance | Transparent Liquid without suspended solids and mechanical impurities | Match the norm | ||
Purity of Acetic Acid ≥ | 99.8 | 99.5 | 98.5 | 99.93 |
Chromaticity (in Hazen)(Pt-Co) ≤ | 10 | 20 | 30 | 5 |
The mass fraction of Water % ≤ | 0.15 | 0.20 | -- | 0.05 |
The mass fraction of Formic Acid % ≤ | 0.05 | 0.10 | 0.30 | 0.02 |
Permanganate-reducing substances, min ≥ | 30.00 | 5.00 | -- | >30 |
The mass fraction of Acetaldehyde % ≤ | 0.03 | 0.05 | 0.10 | 0.01 |
The mass fraction of Evaporation Residue % ≤ | 0.01 | 0.02 | 0.03 | 0.003 |
The mass fraction of Iron (Fe)% ≤ | 0.00004 | 0.0002 | 0.0004 | 0.00002 |
Test Conclusion | Superior Grade |