含铅抗爆分散剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3811111000 | 35.0% | CN | US | Official Doc |
| 3811115000 | 35.0% | CN | US | Official Doc |
| 3824840000 | 41.5% | CN | US | Official Doc |
| 3824850000 | 41.5% | CN | US | Official Doc |
| 2824905000 | 39.8% | CN | US | Official Doc |
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AI Analysis
🛢️ Lead-Based Anti-Knock Dispersants (Lead-Containing Anti-Knock Agents)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Clearance Strategy
📌 I. Product Definition & Classification: Do You Truly Understand "Lead-Based Anti-Knock Dispersants"?
Lead-based anti-knock dispersants are specialized chemical additives used primarily in fuel systems to prevent engine knocking while maintaining the dispersibility of lead compounds (such as tetraethyl lead or other organolead compounds) within the fuel matrix. In international trade, these products are categorized not just by their function (anti-knock), but critically by their physical state (solid/powder vs. liquid) and chemical nature (compound vs. oxide/preparation).
Key Classification Distinctions:
1. Pure Lead Compounds (Anti-Knock Agents):
* Specifically formulated anti-knock agents where lead compounds are the active ingredient.
* Primary HS Codes: 3811.11.10.00 (Solid/General) / 3811.11.50.00 (Liquid/Dispersions).
2. General Chemical Preparations & Dispersants:
* Complex mixtures,缓释 (slow-release) agents, or industrial preparations that may contain lead but are defined by their preparation status rather than just the anti-knock function.
* Primary HS Codes: 3824.84.00.00 / 3824.85.00.00.
3. Lead Oxides & Derivatives:
* Raw chemical forms, such as lead oxides, which serve as the base or intermediate for anti-knock agents.
* Primary HS Code: 2824.90.50.00.
⚠️ Critical Distinction Point:
- If the product is a finished fuel additive designed specifically to combat engine knock → Look at Chapter 38 (3811).
- If it is a general chemical mixture or slow-release agent → Look at Chapter 38 (3824).
- If it is a raw chemical intermediate (like lead oxide) → Look at Chapter 28 (2824).
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Physical/Chemical Form |
|---|---|---|---|
3811.11.10.00 |
Anti-knock preparations based on lead compounds (General) | Solid lead-based anti-knock agents, powders, or general formulations | ✅ Lead Compound (General) |
3811.11.50.00 |
Anti-knock preparations based on lead compounds (Liquid) | Nanodispersions, liquid additives, fluid fuel supplements | ✅ Lead Compound (Liquid) |
3824.84.00.00 |
Prepared binders for foundry molds/core; Other chemical preparations | Chemical industrial preparations, including slow-release agents containing lead | ✅ General Chemical Preparation |
3824.85.00.00 |
Other prepared binders for foundry molds/core; Other chemical preparations | Slow-release agents, general industrial chemical mixtures (no material conflict) | ✅ General Chemical Preparation |
2824.90.50.00 |
Other oxides, hydroxides and peroxides of lead; Other lead chemicals | Lead oxides, lead derivatives, raw chemical forms for anti-knock manufacturing | ✅ Raw Chemical/Oxide |
🔍 Key Reminder:
- "Anti-Knock" vs. "Chemical Preparation": If the primary function is explicitly anti-knock and it's a standard formulation,3811is preferred. If it's a broader industrial chemical (like a slow-release carrier) where lead is just one component,3824may apply. - "Compound" vs. "Oxide": Pure chemical oxides (2824) are raw materials. Finished additives (3811/3824) are processed products. - Liquid State: Always distinguish between solid/general (3811.11.10) and liquid/dispersion (3811.11.50) as tax bases may differ slightly in classification logic, though tariffs here are aligned.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: Current rates apply (Subject to ongoing trade policies)
🎯 1. 3811.11.10.00 & 3811.11.50.00 —— Lead-Based Anti-Knock Agents (Solid & Liquid)
| Item | Detail |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Eligibility | ❌ Not Eligible (High tariff rate usually excludes small packages from de minimis exemptions in practice, or strictly monitored) |
| Legal Basis Path | USITC:3811.11.10.00 → SECTION301:25% → SECTION122:10% |
📌 Explanation:
- 0% Base: Basic imported chemical additives often have low base duties. - +25% (301): Standard Section 301 tariff on Chinese chemical products. - +10% (122): Additional tariff under Section 122 (if currently in force for these specific HS codes), bringing the total to 35%. - Risk: High volume, high risk. Misclassification is strictly audited.
🎯 2. 3824.84.00.00 & 3824.85.00.00 —— Chemical Preparations (Slow-Release/Industrial)
| Item | Detail |
|---|---|
| Base Tariff | 6.5% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | USITC:3824.84.00.00 → SECTION301:25% → SECTION122:10% |
📌 Note:
- These codes are for preparations and mixtures. If your product is not a standard anti-knock agent but a complex industrial chemical, this code applies. - Higher Total Duty (41.5%): Due to the 6.5% base tariff. Ensure you don't use this if your product clearly fits3811(which has 0% base), unless the product composition justifies it. Misclassification here can lead to penalties if declared as3811incorrectly.
🎯 3. 2824.90.50.00 —— Lead Oxides & Other Lead Chemicals
| Item | Detail |
|---|---|
| Base Tariff | 4.8% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 39.8% |
| Tax Calculation | CIF Value × 39.8% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | USITC:2824.90.50.00 → SECTION301:25% → SECTION122:10% |
📌 Explanation:
- Base 4.8%: Higher than3811but lower than3824. - Applicability: Only for raw lead oxides or simple lead derivatives, NOT finished fuel additives. If you import tetraethyl lead (an organolead compound), it is3811, NOT2824.2824is for inorganic lead compounds like lead oxide.
🛠️ IV. Customs Clearance Practical Advice (Avoid Pitfalls Guide)
✅ 1. Essential Documentation Checklist (All Must Be Provided)
| Document | Required | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must clearly state: Chemical composition (lead content %), physical state (liquid/solid), intended use (anti-knock). |
| ✅ Safety Data Sheet (SDS) | ✔️ | Mandatory. Shows HazCom class, lead compound type, and handling requirements. |
| ✅ MSDS/SDS | ✔️ | Must comply with US OSHA HazCom Standard. |
| ✅ Commercial Invoice | ✔️ | Clearly describe product as "Lead-Based Anti-Knock Agent" or "Chemical Preparation". Do not use vague terms like "Fuel Additive". |
| ✅ Certificate of Origin (CO) | ✔️ | To determine applicability of China-specific tariffs (301/122). |
| ✅ Packing List | ✔️ | Details net/gross weight, number of packages, and material of construction. |
| ✅ EPA Registration (if applicable) | ✔️ | If the product is considered a pesticide or biocide by EPA, separate EPA approval is needed. |
✅ 2. Declaration Tips (Key Mnemonics)
🔥 "State Matters: Liquid vs. Solid; Function Matters: Anti-Knock vs. General"
| Scenario | Correct Declaration | Wrong Action |
|---|---|---|
| Liquid Lead Anti-Knock | 3811.11.50.00 - "Lead-Based Anti-Knock Liquid" |
Declare as 3824 → 41.5% vs 35% |
| Solid Lead Anti-Knock | 3811.11.10.00 - "Lead-Based Anti-Knock Powder" |
Declare as 2824 → 39.8% vs 35% |
| General Chemical Mix | 3824.84.00.00 - "Industrial Chemical Preparation" |
Declare as 3811 → 41.5% vs 35% (if not strictly anti-knock) |
| Raw Lead Oxide | 2824.90.50.00 - "Lead Oxide" |
Declare as 3811 → 39.8% vs 35% |
✅ 3. Special Situations Handling
| Situation | Handling Advice |
|---|---|
| Nanodispersions | Must declare as 3811.11.50.00 (Liquid). Provide particle size data if asked. |
| Slow-Release Agents | If the primary function is slow release and not anti-knock, use 3824.85.00.00. |
| Mixed Containers | If lead anti-knock is mixed with other non-lead additives, still likely 3811 if lead is the active anti-knock component. |
| EPA vs. Customs | Note: Tariff classification (HS) does not equal EPA approval. Ensure the product is EPA-compliant before shipment. |
🌍 V. Global Major Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3811.11.10.00 / 3811.11.50.00 |
35% (CN Origin) | SDS, HazCom, EPA (if applicable) | High scrutiny on lead content. |
| 🇪🇺 EU | 3811.10 (Similar) |
Varies (0-6.5%) | REACH Registration | Lead restrictions are strict under REACH. |
| 🇨🇳 China | 3811.11 |
~5-7% | No special surcharges | Import duties apply, but no 301/122. |
| 🇯🇵 Japan | 3811.10 |
~5-6% | Chemical Substances Control Law | Registration required for existing chemicals. |
📌 Conclusion:
- USA is the most tariff-intensive market for these goods due to 301 and 122 tariffs. - EU focuses on environmental safety (REACH) rather than just tariffs. - Accurate Classification is critical: A 6.5% difference in base tariff (between3811and3824) significantly impacts cost.
📌 VI. Common Errors & Pitfall Guide (Blood & Tears Lessons)
❌ Error 1: Classifying Liquid Anti-Knock as 3811.11.10.00 (Solid)
👉 Consequence: Customs may demand reclassification or reject the declaration.
✅ Correct: Use 3811.11.50.00 for liquids/dispersions.
❌ Error 2: Classifying Finished Anti-Knock Additive as 2824.90.50.00 (Lead Oxide)
👉 Consequence: Incorrect description, potential penalty. 2824 is for raw oxides, not formulated additives.
✅ Correct: Use 3811 for formulated anti-knock agents.
❌ Error 3: Ignoring EPA Requirements while focusing only on HS Code
👉 Consequence: Goods seized by CBP for lack of EPA approval.
✅ Correct: Ensure EPA TSCA compliance alongside customs clearance.
❌ Error 4: Using vague terms like "Fuel Additive" on Invoice
👉 Consequence: Customs ambiguity, delays, audits.
✅ Correct: Use precise terms: "Lead-Based Anti-Knock Liquid, HS 3811.11.50.00".
🎯 VII. Conclusion: Professional Declaration, Save Time, Reduce Costs!
🎯 Remember Mnemonics:
🔹 "Liquid vs. Solid: 10.50 vs 10.10"
🔹 "Anti-Knock is 3811, General Prep is 3824"
🔹 "Lead Oxide is 2824, Finished is 3811"
🔹 "35% Total for Anti-Knock, 41.5% for General Prep"
📌 Pro Tip:
If your product is not made in China, you may avoid the 25% Section 301 and 10% Section 122 tariffs.
Recommendation: Apply for an Advance Ruling (CBP Ruling) before shipping to confirm the correct HS Code and avoid post-clearance audits.
📣 Immediate Action:
📞 Contact a licensed customs broker + Provide SDS + Apply for HS Code Advance Ruling
🚀 Ensure your Lead-Based Anti-Knock Dispersants clear customs smoothly, avoid penalties, and maximize profit margins!
✨ Professional Clearance, Starting with Accurate Classification!
💼 Your Cost Efficiency Depends on Precision!
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About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.