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2904.99.50.00/Cumene Sulfonic Acid/Japan

Cumene Sulfonic Acid from Japan

Cumene sulfonic acid from isopropylbenzene sulfonation. HTS 2904.99.50.00 covers branched alkylaromatic sulfonates. Intermediate for dispersants.

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

• Isopropyl vs n-propyl isomer verification via GC-MS

• Azeotropic distillation residue exclusion documentation