p-Toluidine Sulfate from Japan

p-Toluidine sulfate is the sulfuric acid salt of p-toluidine used in diazo salt production for azo dyes. Chapter Note (C)(1) mandates classification with parent toluidine under HTS 2921.43.90. The sulfate enhances water solubility for dye coupling processes.

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%

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Import Tips

• Quantify sulfate counterion; bisulfate forms may classify differently

• pH stability data prevents acidic mixture misclassification

• Diazo coupling test confirms reactivity consistent with Chapter 29 chemical