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HSChapter 29
U.S. imports of tetramethyl lead and tetraethyl lead (HS 293110) totaled $68K in April 2026, traded with 2 countries.
Importers of Tetramethyl Lead and Tetraethyl Lead paid $19K in duties in April 2026 — an effective duty rate of 28% on $68K in dutiable value, based on actual customs collections rather than the published tariff schedule. Tetramethyl Lead and Tetraethyl Lead imports of $68K in April 2026 ran 45% below the year-to-date monthly average of $123K.
Last updated: April 2026 dataTetraethyl lead (TEL) and tetramethyl lead (TML) are organo-lead antiknock compounds whose use as gasoline additives has been phased out in most markets under the Clean Air Act and international environmental agreements, leaving residual trade primarily for specialty industrial or research applications. Japan leads US imports under this heading, followed by India and China. EPA regulates these compounds under both TSCA and the Clean Air Act, and importers must be prepared to demonstrate that the intended use does not violate US fuel additive prohibitions.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
These compounds are not categorically banned from import, but their use as gasoline additives in on-road vehicles is prohibited under the Clean Air Act. Any import must be for a lawful purpose — such as aviation fuel applications, research, or export — and importers must be able to document the end use. EPA TSCA Section 13 certification is required, and CBP may request additional documentation to confirm the shipment does not violate fuel additive regulations.
Both are organo-lead antiknock agents, but tetraethyl lead (TEL) historically dominated gasoline blending due to its superior octane-boosting efficiency, while tetramethyl lead (TML) was used in blends requiring a different volatility profile. Today, both are largely obsolete for fuel use in developed markets, and remaining trade is concentrated in niche industrial chemistry, calibration standards, and legacy aviation fuel markets.
Monthly import values over time
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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 |
|---|---|---|---|---|
| 2931100000 | TETRAMETHYL LEAD AND TETRAETHYL LEAD | $68K | 27.91% | $19K |
TETRAMETHYL LEAD AND TETRAETHYL LEAD
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2931100000 | TETRAMETHYL LEAD AND TETRAETHYL LEAD | $71K |
TETRAMETHYL LEAD AND TETRAETHYL LEAD
5.3K 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 |
|---|---|---|---|
| New York | -- | $62K | +$62K |
| Pennsylvania | $34K | -- | -$34K |
| Maryland | $29K | -- | -$29K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BROWNSVILLE, TX | -- | $62K | +$62K |
| CLEVELAND, OH | $34K | -- | -$34K |
| BALTIMORE, MD | $29K | -- | -$29K |