💾 Data Updated: Latest version • Last updated: December 09, 2025

3808.99.30.00 - Formulated biocides based on 2-methyl-4-isothiazolin-3-one, or 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, or mixtures of 5-chloro-2-methyl-4- isothiazolin-3-one and 2-methyl-4- isothiazolin-3-one; and Metaldehyde 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of Duty25%
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

This HTS subcategory, HTS Code 3808.99.30.00, specifically classifies formulated biocides based on certain isothiazolinones (such as 2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, or mixtures thereof) and Metaldehyde. These products are typically used for their antimicrobial properties in industrial applications or as active ingredients in pest control formulations. The emphasis is on the specific chemical composition of these biocides and their inclusion alongside Metaldehyde, a known molluscicide.

Within the broader category of "Other" disinfectants and similar products, this subcategory is distinguished by its precise chemical formulations. While other "Other" categories might encompass a wider range of disinfectants or products not meeting the specific chemical criteria outlined here, this code is reserved for preparations containing the explicitly listed isothiazolinones or Metaldehyde. This ensures that products with these specific biocidal or pesticidal active ingredients are accurately identified for trade purposes.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification at this level is determined by the presence and form of the specified isothiazolinone biocides or Metaldehyde. The "put up in forms or packings for retail sale or as preparations or articles" aspect from the parent heading remains relevant, meaning these are typically ready-to-use formulations or components thereof.

Frequently Asked Questions

›What is HTS code 3808.99.30.00?
HTS code 3808.99.30.00 covers Formulated biocides based on 2-methyl-4-isothiazolin-3-one, or 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, or mixtures of 5-chloro-2-methyl-4- isothiazolin-3-one and 2-methyl-4- isothiazolin-3-one; and Metaldehyde under the US Harmonized Tariff Schedule. It falls under Chapter 38: Miscellaneous chemical products.
›What products are classified under 3808.99.30.00?
This classification covers Formulated biocides based on 2-methyl-4-isothiazolin-3-one, or 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, or mixtures of 5-chloro-2-methyl-4- isothiazolin-3-one and 2-methyl-4- isothiazolin-3-one; and Metaldehyde. It is a subcategory of Other:.
›What is the import duty rate for 3808.99.30.00?
The general rate of duty for HTS 3808.99.30.00 is Free. The Column 2 rate is 25%.
›What unit of quantity is used for 3808.99.30.00?
Imports under HTS 3808.99.30.00 are measured in kg.

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