U.S. imports of Piperidine and Its Salts (HS 293332) totaled $974K in August 2026, imported from 7 countries.
Importers of Piperidine and Its Salts paid $1K in duties in August 2026, an average duty rate of 0.11% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Piperidine and Its Salts imports of $974K in August 2026 ran 133% above the year-to-date monthly average of $419K.
Last updated: August 2026 dataPiperidine is a saturated six-membered nitrogen heterocycle that serves as a key scaffold in pharmaceutical synthesis and as a chemical intermediate for rubber accelerators and specialty agrochemicals. The US schedule separates piperidine itself (2933321000) from other salts and derivatives (2933325000), a distinction that matters when the imported form is a hydrochloride or other salt rather than the free base. Italy leads US supply under this heading, followed by China and Canada. Because piperidine is a DEA List I chemical precursor, importers must hold the appropriate DEA registration and import permit regardless of the commercial end-use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
8 import shipments a month
Piperidine is classified as a DEA List I chemical because it is a recognized precursor in the illicit synthesis of phencyclidine (PCP). Any importer must obtain a DEA registration and file an import declaration (DEA Form 486) before each shipment, regardless of the stated industrial or pharmaceutical end-use.
The US schedule provides a dedicated line for piperidine (2933321000) and a separate NESOI line (2933325000) for piperidine salts and other forms. Importers should confirm the chemical form — free base versus hydrochloride, acetate, or other salt — before filing entry, as misclassification between these two lines can trigger a CF-28 request or penalty.
Subheading 13 of 27 in heading 2933
Subheading 293332 · $974K of $493.3M
ImportsExports
Imports
$974KYoY · free account
Exports
$9KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $4.4M of Piperidine and Its Salts and exported $1.4M.
Through August 2026 · exports 11 of 12 months reported. Source: U.S. Census Bureau.
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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 |
|---|---|---|---|---|---|
| 2933325000 | Piperidine and Its Salts, NESOI | $754K | 0.15% | 0.34% | $1K |
| 2933321000 | Piperdine | $220K | 0.00% | 0.00% | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2933325000 | Piperidine and Its Salts, NESOI | $9K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Canada and China together supply 90% of it.
customs district
destination
entry
rate provision · imports
99.7% enters free of duty; duty collected equals 0.11% of imports for consumption.