3-Carboxy-1,4-sulfophenylpyrazol-5-one from Japan
This sulfonic/carboxy substituted pyrazolone is named in HTS 2933.19.08.00 as aromatic pyrazole compound. Unfused pyrazole ring with nitrogen hetero-atoms fits Chapter 29. Essential intermediate for acid dyes and pharmaceuticals.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Water-soluble sulfonic acids require special waste handling manifests
• pH adjustment documentation needed for stability during transport
• Verify dual acid functions don't trigger Chapter 28 inorganic classification