# United States tariff lines under HS 3824.40

> The United States tariff splits HS 3824.40 (prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included, prepared additives for cements, mortars or concretes) into 3 national lines: 3824.40.10.00 (containing 5 percent or more by weight of one or more aromatic or modified aromatic substances), 3824.40.20.00 (consisting wholly of inorganic substances) and 3824.40.50.00 (other). The general (MFN) duty differs by line: 6.5% on 3824.40.10.00, free on 3824.40.20.00 and 5% on 3824.40.50.00.

Source: https://border.bot/countries/united-states/hs-codes/382440
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 38](https://border.bot/countries/united-states/hs-codes/38) / [3824.40](https://border.bot/countries/united-states/hs-codes/382440)

## Key facts

- HS subheading: [3824.40](https://border.bot/hs-codes/382440)
- National lines: 3
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 38: Miscellaneous chemical products

## United States lines under 3824.40

The United States tariff splits HS 3824.40 (prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included, prepared additives for cements, mortars or concretes) into 3 national lines: 3824.40.10.00 (containing 5 percent or more by weight of one or more aromatic or modified aromatic substances), 3824.40.20.00 (consisting wholly of inorganic substances) and 3824.40.50.00 (other).

The general (MFN) duty differs by line: 6.5% on 3824.40.10.00, free on 3824.40.20.00 and 5% on 3824.40.50.00.

- [3824.40.10.00](https://border.bot/countries/united-states/hs-codes/3824401000) Prepared additives for cements, mortars or concretes, Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances. Duty (MFN): 6.5%
- [3824.40.20.00](https://border.bot/countries/united-states/hs-codes/3824402000) Prepared additives for cements, mortars or concretes, Consisting wholly of inorganic substances. Duty (MFN): free
- [3824.40.50.00](https://border.bot/countries/united-states/hs-codes/3824405000) Prepared additives for cements, mortars or concretes, Other. Duty (MFN): 5%

## In other countries

No other national tariff on border.bot has live lines under 3824.40 yet.

- [The Harmonized System text for 3824.40](https://border.bot/hs-codes/382440)

- Previous subheading: [3824.30](https://border.bot/countries/united-states/hs-codes/382430) Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included
- Next subheading: [3824.50](https://border.bot/countries/united-states/hs-codes/382450) Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3824.40?

The United States tariff splits HS 3824.40 (prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included, prepared additives for cements, mortars or concretes) into 3 national lines: 3824.40.10.00 (containing 5 percent or more by weight of one or more aromatic or modified aromatic substances), 3824.40.20.00 (consisting wholly of inorganic substances) and 3824.40.50.00 (other).

### What is the duty on HS 3824.40 in the United States?

The general (MFN) duty differs by line: 6.5% on 3824.40.10.00, free on 3824.40.20.00 and 5% on 3824.40.50.00.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/382440.json