HTS 3811: 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
Heading 3811 of the Harmonized Tariff Schedule of the United States has 6 ten-digit statistical numbers. A US entry line in ACE needs the full ten digits, with the quantity in kg.
Check additional duties before you file
- If the goods are made in China, check Section 301 duties under HTSUS heading 9903.88, on top of the general rate, and any exclusions.
| HTSUS number | Description | Unit | General rate |
|---|---|---|---|
| Antiknock preparations: | |||
| 3811.11 | Based on lead compounds: | ||
| 3811.11.10.00 | Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead | kg | Free |
| 3811.11.50.00 | Other | kg | Free |
| 3811.19.00.00 | Other | kg | 6.5% |
| Additives for lubricating oils: | |||
| 3811.21.00.00 | Containing petroleum oils or oils obtained from bituminous minerals | kg | 6.5% |
| 3811.29.00.00 | Other | kg | 6.5% |
| 3811.90.00.00 | Other | kg | 6.5% |
Common paperwork mistakes with heading 3811
- The invoice shows the exporter's own code. Only the first six digits are shared worldwide; the US number has ten. Check every line against the list above.
- The quantity is in the wrong unit. These lines report quantity in kg, which may not match the invoice's cartons, sets or pieces.
- The packing list and the bill of lading disagree on cartons or gross weight, which can lead to holds and exams.
- The manufacturer's name and address are missing, so the MID cannot be built from the documents.
Look up any ten-digit number, or read the guide to invoice and packing list mismatches.
Check the whole shipment, not one number
FreightProof reads the invoice, packing list and bill of lading together, validates every HTS number and container, builds the MIDs and flags what does not match — in about two minutes.
Data: Harmonized Tariff Schedule of the United States, US International Trade Commission. Rates are for information only.