Product classification

HS code for Chemical preparations: 3824.99

Chemical products, mixtures and preparations, n.e.c. heading 3824.

Classification of chemical preparations under HS 3824.99

HS code 3824.99 serves as a residual category for chemical products and preparations of the chemical or allied industries, including those consisting of mixtures of natural products, not elsewhere specified or included. Classification here requires that the product is a mixture or a preparation that does not meet the criteria for a single chemically defined element or compound found in Chapters 28 or 29. This code is one of the most diverse in the Harmonized System, covering a vast array of industrial and commercial chemical blends. To be classified here, the preparation must not be intended for a specific use that has its own dedicated heading, such as diagnostic reagents (3822) or insecticides (3808). The technical composition and the intended industrial application are the primary drivers for classification under this subheading.

Covers: Non-refractory mortars and concretes
Foundry core binders based on natural resinous products
Mixed alkylbenzenes and mixed alkylnaphthalenes
Chemical additives for cement or concrete
Ready-to-use stencil correction fluids
Also under 3824.99: WD-40 Multi-Use Product
Loctite adhesives
BASF Master Builders Solutions admixtures
Ecolab industrial sanitizers
Sigma-Aldrich laboratory chemicals

Codes often confused with 3824.99

Common mistake. A frequent error is classifying pure chemicals under 3824.99. Pure chemicals must be classified in Chapter 28 (Inorganic) or Chapter 29 (Organic). Another common mistake involves HS code 3824.91, which is specifically for mixtures containing halogenated derivatives of methane, ethane, or propane. If a preparation has a specific therapeutic use, it should be moved to Chapter 30 (Medicaments) rather than 3824.99.

3824.91Chemical products, mixtures and preparations; consisting mainly of (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl methyl methylphosphonate and bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl] methylphosphonate

Top exporters and importers of HS 382499 (the code used for chemical preparations), 2025

In 2025, the largest exporter of HS 382499 (the code used for chemical preparations) in UN Comtrade data was China, with 15% of world exports; the largest importer in UN Comtrade data was China, with 15% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 382499, not only chemical preparations.

Top exporters 2025 · share of world exports

1 China $7.0B 15% of world exports
2 Germany $5.9B 12% of world exports
3 United States $5.1B 11% of world exports

World total: $47.1B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

1 China $7.3B 15% of world imports
2 United States $6.1B 12% of world imports
3 Germany $3.0B 6.3% of world imports

World total: $48.6B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for chemical preparations

Brazil splits HS 3824.99 into 49 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Access via API

POST /api/classify/

{
  "query": "chemical preparations"
}

API docs →

Questions about chemical preparations

What is the HS code for Chemical preparations?

The HS code for Chemical preparations is 382499 (Chemical products, mixtures and preparations; n.e.c. heading 3824). The general HS code for miscellaneous chemical preparations not specified elsewhere is 3824.99.

How do I classify Chemical preparations for customs?

Chemical preparations is classified under HS code 382499 — Chemical products, mixtures and preparations; n.e.c. heading 3824. This is a 6-digit subheading level code.

Can pure substances be classified here?

No, 3824.99 is reserved for mixtures and preparations; pure, chemically defined elements or compounds belong in Chapters 28 or 29.

Which countries are the top exporters of chemical preparations (HS 382499)?

In 2025, the top exporters of HS 382499 (the code used for chemical preparations) in UN Comtrade data were China ($7.0B, 15% of world exports), Germany ($5.9B) and the United States ($5.1B). World exports came to about $47.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of chemical preparations (HS 382499)?

In 2025, the top importers of HS 382499 (the code used for chemical preparations) in UN Comtrade data were China ($7.3B, 15% of world imports), the United States ($6.1B) and Germany ($3.0B). World imports came to about $48.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Chemical preparations the same in all countries?

The base HS code 382499 for Chemical preparations is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for chemical preparations in Brazil?

Brazil splits HS 382499 into 49 NCM codes, so the right one for chemical preparations depends on the product's details: 3824.99.11 (Mycelial salinomycin), 3824.99.12 (Cyanocobalamin intermediates, 55 % or less), 3824.99.13 (Ammonium primycin manufacture intermediates), 3824.99.14 (Semduramicin sodium intermediate), 3824.99.15 (Maduramicin ammonium in alcoholic solution), 3824.99.19 (Other antibiotic or vitamin intermediates), and more.