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3813.00.50.00

Preparations and charges for fire extinguishers; charged fire-extinguishing grenades / Other

Classification path

  1. Preparations and charges for fire extinguishers; charged fire-extinguishing grenades
  2. Other

Rates of duty

General (MFN)
3.7%
Column 2Cuba, North Korea, Russia, Belarus
20%
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 3813

About heading 3813

Preparations and charges for fire extinguishers; charged fire-extinguishing grenades

Heading 3813 covers the chemical charges and preparations used inside fire extinguishers, plus charged fire-extinguishing grenades. The heading has two declarable lines: preparations consisting wholly of inorganic substances, and all other preparations. The rate depends only on whether the formulation contains any organic ingredient.

Full guide to heading 3813

Products in this heading

  • Dry chemical extinguishing powder made only of monoammonium phosphate and other inorganic salts
  • Sodium bicarbonate based extinguishing powder
  • Potassium bicarbonate based extinguishing powder for kitchen and liquid fuel fires
  • Aqueous film forming foam concentrate
  • Charged fire-extinguishing grenades
  • Carbon dioxide extinguishing charges put up as preparations
  • Premixed wet chemical extinguishing solution for commercial hood systems

Frequently asked questions

What is the HTS code for fire extinguishing preparations?

Charges consisting wholly of inorganic substances fall under 3813.00.10.00, with a general (MFN) rate of Free. All other fire extinguishing preparations fall under 3813.00.50.00, with a general (MFN) rate of 3.7%.

What is the duty on fire extinguisher chemical charge?

The general (MFN) rate is Free for 3813.00.10.00 when the charge is wholly inorganic. If the charge contains organic ingredients, it is classified in 3813.00.50.00 at a general (MFN) rate of 3.7%.

How do I classify a dry chemical extinguishing powder?

Look at the ingredient list: a powder made entirely of inorganic salts goes to 3813.00.10.00 at Free. A powder that includes organic additives or surfactants goes to 3813.00.50.00 at a general (MFN) rate of 3.7%.

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

HTS 3813.00.50.00: Preparations and charges for fire extinguishers; charged fi..., 3.7% duty | HTSBase