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HTSUS, United States

2850.00.50.00

Other

Classification path

  1. Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849
  2. Other

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, 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 2850

About heading 2850

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849

Heading 2850 covers hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, except compounds that are also carbides of heading 2849. It is split by metal: calcium, titanium, tungsten, vanadium, and other.

Full guide to heading 2850

Products in this heading

  • Calcium hydride
  • Titanium nitride
  • Tungsten boride
  • Vanadium nitride
  • Sodium azide
  • Calcium silicide
  • Boron nitride

Frequently asked questions

What is the HTS code for titanium nitride?

Titanium nitride is classified under 2850.00.07.00; the general (MFN) rate is 4.9%.

What is the duty on tungsten boride?

Tungsten boride is classified under 2850.00.10.00; the general (MFN) rate is 5.5%.

How do I classify sodium azide?

Sodium azide is an azide not listed under calcium, titanium, tungsten or vanadium, so it falls under 2850.00.50.00, with a general (MFN) rate of 3.7%.

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 2850.00.50.00: Other, 3.7% duty | HTSBase