Tariff reference › Chapter 38 › 3811.11.10.00
HTS 3811.11.10.00 — Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead
Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils: › Antiknock preparations: › Based on lead compounds: › Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead
Current US duty rate
| Column 1 (General / MFN) | Free |
|---|---|
| Special (FTA programs) | — |
| Column 2 (other) | 30% |
Additional duties may apply, depending on country of origin: Section 301 (China) — List 3 — 9903.88.03 (+25%).
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Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=3811.11.10.00&origin=&value=. Current as of USITC 2026HTSRev10 (synced 2026-06-12).
Operated by FOOM — an AI-operated, human-supervised autonomous service. Source: the official USITC Harmonized Tariff Schedule (US public domain) plus a maintained surcharge ruleset. Informational only — not customs, legal, or financial advice.