Loading...
HSChapter 38
U.S. imports of lead-based antiknock preparations (HS 381111) totaled $2.5M in April 2026, traded with 4 countries.
Importers of Lead-Based Antiknock Preparations paid $149K in duties in April 2026 — an effective duty rate of 5.9% on $2.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Lead-Based Antiknock Preparations imports of $2.5M in April 2026 ran 45% above the year-to-date monthly average of $1.8M.
Last updated: April 2026 dataLead-based antiknock preparations — most notably those derived from tetraethyl lead (TEL) — are subject to stringent environmental and regulatory scrutiny given the well-documented toxicity of organolead compounds. The US schedule distinguishes tetraethyl lead formulations (3811111000) from other lead-compound-based antiknock preparations (3811115000). The United Kingdom and Germany are the leading import sources, reflecting the legacy industrial base for these compounds, with the United Arab Emirates also appearing as a supplier. Demand in the US is now largely confined to aviation gasoline (avgas) and certain specialty applications, as leaded automotive fuel has been phased out.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes, but their use is highly restricted. Leaded fuel for on-road vehicles is prohibited under the Clean Air Act, but tetraethyl lead formulations remain in use for certain aviation gasolines (avgas) and specialty applications. Importers must ensure end-use compliance with EPA regulations and should verify that the specific formulation and intended application are permissible before importation.
Line 3811111000 covers antiknock preparations specifically based on tetraethyl lead and closely related organolead compounds, while 3811115000 captures all other lead-compound-based antiknock preparations not elsewhere specified. The distinction matters for classification accuracy and for tracking regulatory compliance, as different organolead chemistries may carry different handling and reporting obligations.
Supplier Network
Get discovered by U.S. importers searching for HS 381111 — Lead-Based Antiknock Preparations. Be the first supplier listed.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| UNITED KINGDOM | $2.5M | -- | -$2.5M |
| CANADA | -- | $115K | +$115K |
| MEXICO | -- | $77K | +$77K |
| GERMANY | $15K | -- | -$15K |
| BELGIUM | -- | $9K | +$9K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 3811111000 | ANTIKNOCK PREP, BASED ON TETRAETHYL LEAD ETC | $2.5M | 5.83% | $148K |
| 3811115000 | ANTIKNOCK PREP BASED ON LEAD COMPOUNDS, NESOI | $15K | 10.00% | $2K |
ANTIKNOCK PREP, BASED ON TETRAETHYL LEAD ETC
ANTIKNOCK PREP BASED ON LEAD COMPOUNDS, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3811110000 | ANTIKNOCK PREPARATIONS, BASED ON LEAD COMPOUNDS | $204K |
ANTIKNOCK PREPARATIONS, BASED ON LEAD COMPOUNDS
66.5K kg
PRODUCTS AND RESIDUALS OF CHEMICAL INDUSTRY, NESOI
HS 382499
DIAGNOSTIC OR LABORATORY REAGENTS INCL KITS, NESOI
HS 382219
CHEM ELEM DOPED, USED IN ELECTRON, DISCS WAFERS ET
HS 381800
SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND
HS 381512
SUPPORTED CATALYSTS, NESOI
HS 381519
ADDITIVE FOR LUB OIL CONT PETRO/BITUMINOUS MINOIL
HS 381121
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $2.5M | $9K | -$2.5M |
| Illinois | -- | $143K | +$143K |
| Unidentified | -- | $24K | +$24K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $2.5M | -- | -$2.5M |
| LAREDO, TX | -- | $77K | +$77K |
| PORT HURON, MI | -- | $69K | +$69K |