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HSChapter 29
U.S. imports of piperidine and its salts (HS 293332) totaled $354K in April 2026, traded with 6 countries.
Piperidine and Its Salts imports of $354K in April 2026 ran 29% above the year-to-date monthly average of $275K.
Last updated: April 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.
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.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| UNITED KINGDOM | $160K | -- | -$160K |
| CANADA | $99K | $3K | -$96K |
| CHINA | $93K | -- | -$93K |
| INDIA | $2K | -- | -$2K |
| NETHERLANDS | -- | -- | -- |
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2933325000 | PIPERIDINE AND ITS SALTS, NESOI | $258K | 16.50% | $6K |
| 2933321000 | PIPERDINE | $95K | -- | -- |
PIPERIDINE AND ITS SALTS, NESOI
PIPERDINE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2933325000 | PIPERIDINE AND ITS SALTS, NESOI | $3K |
PIPERIDINE AND ITS SALTS, NESOI
10 kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Pennsylvania | $125K | -- | -$125K |
| Delaware | $99K | -- | -$99K |
| Massachusetts | $93K | -- | -$93K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| PHILADELPHIA INTERNATIONAL AIRPORT, PA | $125K | -- | -$125K |
| NEW ORLEANS, LA | $101K | -- | -$101K |
| MIAMI INTERNATIONAL AIRPORT, FL | $73K | -- | -$73K |