U.S. imports of Malonylurea (Barbituric Acid) and Its Salts (HS 293352) totaled $6K in August 2026, imported from 4 countries.
Malonylurea (Barbituric Acid) and Its Salts imports of $6K in August 2026 ran 84% below the year-to-date monthly average of $36K.
Last updated: August 2026 dataBarbituric acid (malonylurea) is the parent heterocyclic compound from which the entire barbiturate drug class is derived, though the acid itself has no central nervous system activity and is used primarily as a chemical intermediate in pharmaceutical and dye synthesis. The US schedule provides three 10-digit lines: a general line (2933520000), one for the free acid (2933521000), and one for its salts (2933529000). Germany leads US supply, followed by China and the United Kingdom. Because barbituric acid is a precursor to controlled barbiturate substances, importers should maintain clear documentation of intended use to facilitate smooth CBP and DEA review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1 import shipments a month
Barbituric acid (malonylurea) is not itself a DEA-scheduled substance — it lacks pharmacological activity. However, many of its derivatives (such as those in heading 293353) are Schedule II, III, or IV controlled substances. Importers of barbituric acid should nonetheless maintain documentation of the intended industrial or pharmaceutical intermediate use, as CBP may query the purpose of the import given the compound's relationship to controlled barbiturates.
The free acid and its salts are classified on separate 10-digit lines, which may carry different duty rates. Importers must confirm the chemical form — whether the material is the undissociated acid or a specific salt (e.g., sodium malonylurate) — before filing entry. Misidentifying the form can result in an incorrect line selection and potential liquidation adjustment.
ImportsExports
Imports
$6KYoY · free account
Exports
—YoY · free account
Low of 10 reported months · imports
Low · free accountFewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 10 of 12 months reported, exports 2 of 12 months reported. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 293352 — Malonylurea (Barbituric Acid) and Its Salts, so the companies trading it can find you. Be the first supplier listed.
Subheading 20 of 27 in heading 2933
Subheading 293352 · $6K of $493.3M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2933529000 | Salts of Malonylurea (Barbituric Acid) | $6K | 12.50% | 100.00% | $706 |
| 2933521000 | Malonylurea (Barbituric Acid) | — | -- | -- | -- |
Imports · August 2026
origin
China and Germany together supply 100% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 12.50% of imports for consumption.