Oxalic Acid Dihydrate from Japan
Oxalic acid dihydrate (C2H2O4·2H2O) is the crystalline form of oxalic acid commonly used in industrial cleaning and metal polishing. It falls under HTS 2917.11.00.00 as a separate chemically defined acyclic polycarboxylic acid. This pure compound meets chapter 29 note (a) without exclusions.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify purity certificate showing >99% oxalic acid content to confirm classification under 2917.11 vs mixtures in chapter 38
• Include Material Safety Data Sheet (MSDS) documenting corrosive nature and proper hazard labeling for DOT compliance
• Avoid common pitfall of classifying technical grade with impurities >1% which may shift to 3824 as chemical preparations