Product classification
HS code for Concrete additives: 3824.40
Cements, mortars or concretes, their prepared additives.
Classification of concrete additives under HS 3824.40
Prepared additives for cements, mortars, or concretes are classified under HS code 3824.40. These are chemical formulations designed to modify the properties of the mixture, such as its workability, setting time, or durability. The classification covers a wide range of chemical agents that are added in small quantities to the bulk material. It is important to note that this code refers to 'prepared' additives, meaning they are mixtures or specific chemical compounds intended for this industrial application. This excludes basic raw materials like sand or gravel, which are classified in Chapter 25. The classification ensures that specialized construction chemicals are correctly identified for safety and environmental regulations. These additives can be liquid or powder and are usually added during the mixing phase of concrete production. They function through various chemical mechanisms, such as reducing the water-to-cement ratio or introducing microscopic air bubbles to improve freeze-thaw resistance. Under GRI 1, these are classified as chemical products not elsewhere specified or included, specifically prepared for construction use.
- Covers
- Concrete plasticizers and superplasticizers
- Set accelerators and retarders
- Air-entraining admixtures
- Waterproofing agents for concrete
- Bonding agents for mortar
- Also under 3824.40
- Sika Admixtures
- BASF Master Builders Solutions
- GCP Applied Technologies Admixtures
- Chryso Admixtures
- Fosroc Admixtures
Codes often confused with 3824.40
Common mistake. Common misclassifications include HS code 3214.90, which covers non-refractory surfacing preparations like plasters, and 3824.50, which is for non-refractory mortars and concretes themselves. The distinction is that 3824.40 is for the *additives* used in the mix, not the final mixture of cement and aggregate.
Top exporters and importers of HS 382440 (the code used for concrete additives), 2025
In 2025, the largest exporter of HS 382440 (the code used for concrete additives) in UN Comtrade data was China, with 20% of world exports; the largest importer in UN Comtrade data was Germany, with 4.3% 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 382440, not only concrete additives.
Top exporters 2025 · share of world exports
- 1 China $388M 20% of world exports
- 2 Germany $244M 12% of world exports
- 3 Italy $175M 8.8% of world exports
World total: $2.0B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $90M 4.3% of world imports
- 2 United States $76M 3.6% of world imports
- 3 India $58M 2.8% of world imports
World total: $2.1B 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 code for concrete additives
Brazil classifies concrete additives under NCM 3824.40.00: HS 3824.40 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about concrete additives
What is the HS code for Concrete additives?
The HS code for Concrete additives is 382440 (Cements, mortars or concretes; their prepared additives). The HS code for prepared additives for cements, mortars, or concretes is 3824.40.
How do I classify Concrete additives for customs?
Concrete additives is classified under HS code 382440 — Cements, mortars or concretes; their prepared additives. This is a 6-digit subheading level code.
Are color pigments for concrete included here?
No, color pigments are generally classified under Chapter 32 (e.g., 3206) as coloring matter, unless they are part of a complex prepared additive mixture.
Which countries are the top exporters of concrete additives (HS 382440)?
In 2025, the top exporters of HS 382440 (the code used for concrete additives) in UN Comtrade data were China ($388M, 20% of world exports), Germany ($244M) and Italy ($175M). World exports came to about $2.0B, 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 concrete additives (HS 382440)?
In 2025, the top importers of HS 382440 (the code used for concrete additives) in UN Comtrade data were Germany ($90M, 4.3% of world imports), the United States ($76M) and India ($58M). World imports came to about $2.1B, 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.
Is the HS code for Concrete additives the same in all countries?
The base HS code 382440 for Concrete additives 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 concrete additives in Brazil?
In Brazil, concrete additives (HS 382440) is classified under NCM 3824.40.00.