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2931.44.00.00/Stabilized Methylphosphonic Acid Flakes/Japan

Stabilized Methylphosphonic Acid Flakes from Japan

Methylphosphonic acid flakes with minimal stabilizer for safe transport, falling under HTS 2931.44.00.00 per Chapter 29 note (f) allowing added stabilizers. Used in polymer flame retardant production.

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

• Document stabilizer as necessary for preservation only; test for anti-caking agents

• Pitfall: excessive additives trigger note (g) but risk specific use exclusion

Stabilized Methylphosphonic Acid Flakes from Japan — Import Duty Rate | HTS 2931.44.00.00