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2931.44.00.00/Stabilized Methylphosphonic Acid Flakes/Mexico

Stabilized Methylphosphonic Acid Flakes from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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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 Mexico — Import Duty Rate | HTS 2931.44.00.00