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HTS code reference›Chapter 29: Organic chemicals›2931.44.00.00

HTS Code 2931.44.00.00

Methylphosphonic acid

Official tariff path

Other organo-inorganic compounds: › Non-halogenated organo-phosphorous derivatives: › Methylphosphonic acid

Level: statistical10General duty: 3.7%Unit: kg

What does HTS 2931.44.00.00 cover?

This provision appears in the 2026 Harmonized Tariff Schedule of the United States under the following legal tariff hierarchy. A product must match the wording and applicable section or chapter notes before this code is used on an entry.

  1. 1Other organo-inorganic compounds:
  2. 2Non-halogenated organo-phosphorous derivatives:
  3. 3Methylphosphonic acid

Nearby tariff provisions

2931.10.00.00Tetramethyl lead and tetraethyl lead2931.20.00.00Tributyltin compounds2931.41.00.00Dimethyl methylphosphonate2931.42.00.00Dimethyl propylphosphonate2931.43.00.00Diethyl ethylphosphonate2931.45.00.00Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1)2931.46.00.002,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide2931.47.00.00(5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate
Official source and limitations

Based on USITC HTS 2026 Revision 12, published July 21, 2026. The general rate does not include every origin-specific program, Section 301 or 232 measure, antidumping or countervailing duty, quota, or other agency requirement.

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