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|
Index |
Best-grade |
First-grade |
Qualified |
|
Chromaticity（in Hazen）（Pt-Co），≤ |
10 |
20 |
30 |
|
Acetic acid content，％≥ |
99.5 |
99.0 |
98.0 |
|
Moisture，％≤ |
0.05 |
- |
- |
|
Formic acid content，％≤ |
0.15 |
0.15 |
0.35 |
|
Aldehyde content, ％≤ |
0.05 |
0.05 |
0.10 |
|
Vaporized residue，％≤ |
0.02 |
0.02 |
0.03 |
|
Iron content (based on Fe), ％≤ |
0.00004 |
0.0002 |
0.0004 |
|
Reduction time of potassium permanganate, min≥ |
30 |
5 |
- |