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2920.22.00.00

Diethyl phosphite

Classification path

  1. Esters of other inorganic acids of nonmetals (excluding esters of hydrogen halides) and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives
  2. Phosphite esters and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives
  3. Diethyl phosphite

Rates of duty

General (MFN)
3.7%
Column 2Cuba, North Korea, Russia, Belarus
25%
Unit of quantity
kg

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, K, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

Related lines in heading 2920

About heading 2920

Esters of other inorganic acids of nonmetals (excluding esters of hydrogen halides) and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives

Heading 2920 covers esters of other inorganic acids of nonmetals, excluding esters of hydrogen halides, and their salts and halogenated, sulfonated, nitrated or nitrosated derivatives. It is split into thiophosphoric esters, phosphite esters, endosulfan, and other products.

Full guide to heading 2920

Products in this heading

  • Parathion (ISO) insecticide
  • Parathion-methyl (ISO) insecticide
  • Fenitrothion insecticide
  • Dimethyl phosphite
  • Diethyl phosphite
  • Trimethyl phosphite
  • Triethyl phosphite
  • Endosulfan (ISO) insecticide

Frequently asked questions

What is the HTS code for parathion?

Parathion (ISO) is classified under 2920.11.00.00 and is Free under the general (MFN) rate.

What is the duty on fenitrothion?

Fenitrothion is classified under 2920.19.10.00 and carries a general (MFN) rate of 6.5%.

How do I classify ethylene carbonate?

Ethylene carbonate (1,3-dioxolan-2-one) is classified under 2920.90.51.10 and carries a general (MFN) rate of 3.7%.

Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.

HTS 2920.22.00.00: Diethyl phosphite, 3.7% duty | HTSBase