lead containing anti explosive dispersant
CN β 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 |
AI Analysis
π§ͺ Lead-Based Anti-Explosive Dispersant & Chemical Additives
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Full Analysis | Professional Clearance Strategy
π I. Product Definition and Classification: Do You Really Understand "Lead-Based Anti-Explosive Agents"?
Lead-based anti-explosive dispersants are specialized chemical additives used primarily in the petroleum industry to enhance the octane rating of fuels, thereby preventing engine knocking (detonation). Due to their lead content and specific chemical forms, they fall into distinct categories based on their physical state (liquid vs. solid/nano-dispersed) and functional description (anti-knock vs. explosion retardant/retarder).
In international trade, accuracy in classification is critical because lead-containing chemicals are often subject to strict environmental regulations and high tariff burdens (especially under Section 301 and IEEPA provisions for imports from China to the US).
β οΈ Key Distinction Points:
- Primary Function: Is it strictly an "anti-knock agent" (octane booster) or a broader "explosion retardant/dispersant"?
- Physical State: Is it a standard liquid solution, a nano-dispersion, or a solid chemical agent?
- Chemical Basis: Is it based on lead compounds (organolead) or lead oxides?
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Tax Rate | Key Characteristics |
|---|---|---|---|---|
3811.11.10.00 |
Lead-Based Anti-Knock Agent | Standard fuel additives based on lead compounds | 35.0% | Solid or general form; primary use is anti-knock. Base: 0%, Sec 301: 25%, IEEPA: 10%. |
3811.11.50.00 |
Lead-Based Anti-Knock Agent (Liquid) | Liquid fuel additives based on lead compounds | 35.0% | Specific liquid form. Base: 0%, Sec 301: 25%, IEEPA: 10%. |
3824.84.00.00 |
Lead-Containing Explosion Retarder/Dispersant | Chemical preparations for explosion retardancy | 41.5% | Broader category for "explosion retardants." Base: 6.5%, Sec 301: 25%, IEEPA: 10%. |
3824.85.00.00 |
Lead-Containing Explosion Retarder/Dispersant (Retarder Class) | Chemical preparations, specifically retardants | 41.5% | Specific sub-category for retardants. Base: 6.5%, Sec 301: 25%, IEEPA: 10%. |
2824.90.50.00 |
Lead-Based Anti-Knock Nano-Dispersion | Nano-scale lead oxide dispersion for anti-knock use | 39.8% | Advanced form; Lead oxide base. Base: 4.8%, Sec 301: 25%, IEEPA: 10%. |
π Critical Reminder:
- Products under 3811 are strictly for anti-knock purposes in fuels.
- Products under 3824 are broader chemical preparations (dispersants/retardants).
- Nano-dispersions (2824) have a different base tax rate (4.8%) compared to standard lead compounds (0% or 6.5%), but still carry significant additional tariffs.
π° III. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes & Policy Surcharges)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: From November 10, 2025 (and subsequent imports)
π― 1. 3811.11.10.00 & 3811.11.50.00 ββ Lead-Based Anti-Knock Agents (Solid & Liquid)
| Item | Content |
|---|---|
| Base Tariff | 0% (ad valorem) |
| USITC Surcharge (Sec 301) | +25% (Section 301 Duties on Chinese Goods) |
| IEEPA Surcharge | +10% (International Emergency Economic Powers Act - China Specific) |
| Total Effective Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3811.11.10.00/50.00 β FOOTNOTE:9903.88.01 |
π Explanation:
- Despite a 0% base tariff, the 25% Section 301 tariff and 10% IEEPA tariff make the total cost 35%.
- This applies to both solid (...10.00) and liquid (...50.00) forms of lead-based anti-knock agents.
- High Risk Category: Lead compounds are environmentally sensitive; customs may require additional environmental compliance documents.
π― 2. 3824.84.00.00 & 3824.85.00.00 ββ Lead-Containing Explosion Retardants/Dispersants
| Item | Content |
|---|---|
| Base Tariff | 6.5% (ad valorem) |
| USITC Surcharge (Sec 301) | +25% (Section 301 Duties on Chinese Goods) |
| IEEPA Surcharge | +10% (International Emergency Economic Powers Act - China Specific) |
| Total Effective Rate | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3824.84.00.00/85.00 β FOOTNOTE:9903.88.01 |
π Explanation:
- These codes are for broader "chemical preparations" where lead is used as an explosion retardant or dispersant agent.
- The base tariff is higher (6.5%) compared to anti-knock agents (0%), leading to a total of 41.5%.
- Use these only if the primary function is not strictly anti-knock in fuel, but rather general explosion retardancy or dispersion in other chemical contexts.
π― 3. 2824.90.50.00 ββ Lead-Based Anti-Knock Nano-Dispersion
| Item | Content |
|---|---|
| Base Tariff | 4.8% (ad valorem) |
| USITC Surcharge (Sec 301) | +25% (Section 301 Duties on Chinese Goods) |
| IEEPA Surcharge | +10% (International Emergency Economic Powers Act - China Specific) |
| Total Effective Rate | 39.8% |
| Tax Calculation | CIF Value Γ 39.8% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:2824.90.50.00 |
π Explanation:
- This is a nano-scale dispersion where the core component is lead oxide.
- Although the base tariff is higher than3811(4.8% vs 0%), the total is lower than3824(39.8% vs 41.5%).
- Best Option for Nano-Products: If your product is explicitly a nano-dispersion of lead oxide, this code may offer the most favorable total rate among lead-containing products, but requires precise technical documentation.
π οΈ IV. Customs Clearance Practical Advice (Practical Pitfall Avoidance Guide)
β 1. Documentation Checklist (Must-Haves)
| Document | Required | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must specify: Chemical composition, form (liquid/solid/nano), lead concentration, and primary function. |
| β MSDS (Material Safety Data Sheet) | βοΈ | Crucial for lead-containing chemicals. Must comply with OSHA/Hazcom standards. |
| β Circumstances of Sale / Commercial Invoice | βοΈ | Clearly state "Anti-Knock Agent" or "Explosion Retarder" as per HS Code description. |
| β Certificate of Origin | βοΈ | Required for tariff calculation and Section 301/IEEPA applicability. |
| β Third-Party Test Report | βοΈ | Confirm lead content and nano-particle size (if claiming 2824.90.50.00). |
| β EPA TSCA Certification | βοΈ | Mandatory for chemical imports. Must show compliance with the Toxic Substances Control Act. |
β 2. Declaration Tips (Key Mnemonic)
π₯ "Function Dictates Code, Form Dictates Base, Lead Means No De Minimis!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Standard Lead Anti-Knock (Solid) | 3811.11.10.00 |
Misdeclare as 3824 β Higher tax (41.5% vs 35%) |
| Liquid Lead Anti-Knock | 3811.11.50.00 |
Declare as 3811.11.10.00 β Risk of rejection for mismatch |
| General Explosion Retarder | 3824.84.00.00 or 85.00 |
Misdeclare as 3811 β If function is not anti-knock, this is fraud |
| Nano-Lead Oxide Dispersion | 2824.90.50.00 |
Misdeclare as 3811 β Higher tax (39.8% vs 35%) OR lower tax if correctly classified as nano? (Wait, 39.8% is higher than 35%, so 3811 is better if applicable. Correction: If it is truly a nano-dispersion of lead oxide, 2824 is the correct technical classification, but tax is 39.8%. If it can be classified as a general anti-knock agent 3811, tax is 35%. Strategy: Ensure product fits 3811 description if possible for lower tax, unless it is technically a nano-dispersion requiring 2824.) |
π Strategic Note:
- If your product is a nano-dispersion, you might be forced into2824.90.50.00(39.8%).
- If your product is a standard lead compound solution, use3811(35%).
- Do not try to force a nano-product into3811if it doesn't meet the definition, as customs may reclassify and penalize.
β 3. Special Circumstances Handling
| Situation | Handling Advice |
|---|---|
| Lead Content > 0.1% | Triggers strict EPA TSCA and potential hazardous material surcharges. Ensure MSDS is clear. |
| Nano-Particles | If claiming 2824.90.50.00, provide particle size distribution data. Customs may require additional safety data for nano-materials. |
| Mixed Forms | If the shipment contains both solid and liquid forms, declare separately. Mixing codes leads to delays. |
| EPA TSCA | Without a valid EPA TSCA certification number, goods will be detained or returned. This is the #1 reason for delay in chemical imports. |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Effective Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3811.11.10.00 / ...50.00 |
35.0% | EPA TSCA + OSHA Hazcom | High tariffs + Environmental scrutiny |
| πΊπΈ USA | 3824.84.00.00 / ...85.00 |
41.5% | EPA TSCA + OSHA Hazcom | Higher base tax |
| πΊπΈ USA | 2824.90.50.00 |
39.8% | EPA TSCA + Nano Material Review | Specific for nano-dispersions |
| π¨π³ China | 3811.11.10.00 |
0% | CCC (if applicable) | No Section 301/IEEPA |
| πͺπΊ EU | 3824.84.00 |
6.5% | REACH Registration | Lead restrictions under REACH |
π Conclusion:
- USA is the most expensive market for lead-based chemicals due to Section 301 and IEEPA tariffs.
- EPA TSCA compliance is non-negotiable in the US.
- China Origin goods face significantly higher duties compared to other regions.
π VI. Common Errors & Pitfall Guide (Lessons Learned)
β Error 1: Misdeclaring 3811 (Anti-Knock) as 3824 (Chemical Preparation)
π Consequence: Unjustified higher tax (41.5% vs 35%).
β Error 2: Failing to provide EPA TSCA Certification
π Consequence: 100% Detention or Return. Clearance impossible without it.
β Error 3: Ignoring the "Nano" specification for 2824.90.50.00
π Consequence: If customs determines it's not nano, they may reclassify to 3811 (lower tax) or 3824 (higher tax) based on general function, leading to audit and penalties.
β Error 4: Claiming De Minimis Exemption for small shipments
π Consequence: Denied. Lead chemicals are excluded from de minimis. Full duties apply even for small values.
β Correct Practice:
"Lead-Based Anti-Knock Agent, Liquid, Organolead Compound, EPA TSCA Compliant, CAS Number: [Insert], HS Code: 3811.11.50.00"
π― VII. Conclusion: Professional Declaration, Save Costs, Ensure Compliance!
π― Remember the Mnemonic:
πΉ "Anti-Knock is 3811 (35%), Retarder is 3824 (41.5%), Nano is 2824 (39.8%)."
πΉ "Lead Means No De Minimis, EPA TSCA is Mandatory, Misclassification is Expensive!"
π Pro Tip:
If your product is a nano-dispersion, carefully evaluate if it truly fits 2824.90.50.00 (39.8%) or if it can be classified as a standard anti-knock agent 3811 (35%) to save 4.8% in taxes. However, accuracy is paramount to avoid penalties.
π Immediate Action:
- Contact a professional customs broker.
- Prepare MSDS and EPA TSCA Certification.
- Apply for an Advance Ruling if unsure about classification.
π Let your chemical products clear customs smoothly, efficiently, and cost-effectively!
β¨ Professional Customs Clearance Starts with Precise Classification!
πΌ Every Percent of Tax Saves is Pure Profit!
Customer Reviews
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) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β 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 β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β 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.