Product classification
HS code for Malonylurea: 2933.52
Heterocyclic compounds, containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, malonylurea (barbituric acid) and its salts.
Classification of malonylurea under HS 2933.52
Malonylurea, commonly known as barbituric acid, is classified under HS code 2933.52. This classification falls within Chapter 29, which covers organic chemicals. Specifically, heading 2933 is reserved for heterocyclic compounds with nitrogen hetero-atom(s) only. Malonylurea is a pyrimidine derivative, characterized by a six-membered ring containing two nitrogen atoms. Subheading 2933.52 is a specific provision for malonylurea (barbituric acid) and its salts. The classification is straightforward under GRI 1, as the chemical name is explicitly mentioned in the Harmonized System legal text. Barbituric acid serves as the parent compound for a wide range of barbiturate drugs, although the acid itself is not pharmacologically active as a central nervous system depressant. In its pure chemical form, or as a salt, it remains in Chapter 29. If the substance were prepared as a medicament in measured doses, the classification would shift to Chapter 30, but as a raw chemical compound, 2933.52 is the correct designation.
- Covers
- Malonylurea (Barbituric acid)
- Sodium barbiturate (salt of malonylurea)
- Ammonium barbiturate
- Calcium barbiturate
- Other metallic salts of barbituric acid
- Also under 2933.52
- BASF (for intermediates)
- Lonza (for fine chemicals)
- Sigma-Aldrich (for research chemicals)
- Merck KGaA
Codes often confused with 2933.52
Common mistake. A frequent misclassification occurs with HS code 2933.53, which covers specific derivatives like allobarbital, amobarbital, and pentobarbital. While these are derived from malonylurea, they are distinct chemical entities with their own specific subheadings. Additionally, importers sometimes confuse this with 3004.90, which covers medicaments. However, unless the malonylurea is put up in measured doses or in forms for retail sale for therapeutic use, it must remain in the organic chemicals chapter under 2933.52.
Top exporters and importers of HS 293352 (the code used for malonylurea), 2025
In 2025, the largest exporter of HS 293352 (the code used for malonylurea) in UN Comtrade data was China, with 65% of world exports; the largest importer in UN Comtrade data was India, with 39% 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 293352, not only malonylurea.
Top exporters 2025 · share of world exports
- 1 China $10M 65% of world exports
- 2 South Korea $3.3M 21% of world exports
- 3 India $989K 6.4% of world exports
World total: $16M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $5.6M 39% of world imports
- 2 Germany $4.3M 30% of world imports
- 3 United States $1.9M 13% of world imports
World total: $14M 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 malonylurea
Brazil classifies malonylurea under NCM 2933.52.00: HS 2933.52 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about malonylurea
What is the HS code for Malonylurea?
The HS code for Malonylurea is 293352 (Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, malonylurea (barbituric acid) and its salts). The HS code for Malonylurea (also known as barbituric acid) and its salts is 2933.52.
How do I classify Malonylurea for customs?
Malonylurea is classified under HS code 293352 — Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, malonylurea (barbituric acid) and its salts. This is a 6-digit subheading level code.
Is barbituric acid classified the same as barbiturate drugs?
No, while they are related, barbituric acid is under 2933.52, whereas many specific barbiturate derivatives like phenobarbital are classified under 2933.53 or 2933.54.
Which countries are the top exporters of malonylurea (HS 293352)?
In 2025, the top exporters of HS 293352 (the code used for malonylurea) in UN Comtrade data were China ($10M, 65% of world exports), South Korea ($3.3M) and India ($989K). World exports came to about $16M, 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 malonylurea (HS 293352)?
In 2025, the top importers of HS 293352 (the code used for malonylurea) in UN Comtrade data were India ($5.6M, 39% of world imports), Germany ($4.3M) and the United States ($1.9M). World imports came to about $14M, 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 Malonylurea the same in all countries?
The base HS code 293352 for Malonylurea 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 malonylurea in Brazil?
In Brazil, malonylurea (HS 293352) is classified under NCM 2933.52.00.