Test Item Specification Results Appearance Colorless transparent liquid Colorless transparent liquid Acetic acid content ≥99.5% 99.6% potassium permanganate test time ≥5min 170 Iron（Fe） ≤0.0002% 0.00004% Evaporation residue ≤0.02% 0.008% Acetaldehyde ≤0.05% 0.008% Formic acid ≤0.10% 0.009% Water content ≤0.20% 0.12% Color(Hazen Pt-Co) ≤20 10 Conclusion Qualified