橡胶脱硫剂复合剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824999386 | 40.0% | CN | US | Official Doc |
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🧪 Rubber Desulfurization Agent Composite (橡胶脱硫剂复合剂)
🌐 HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 1. Product Definition & Classification: Do You Really Understand "Rubber Desulfurization Agents"?
Rubber desulfurization agent composites are specialized chemical reagents used in the rubber recycling and reclamation process. Their primary function is to break down sulfur cross-links in vulcanized rubber (devulcanization), allowing scrap rubber to be reprocessed into usable raw material.
In international trade, these are classified based on their chemical nature and specific application as "chemical products and preparations" (Chapter 38). They are NOT classified by the base material (rubber) but by their function as chemical additives.
⚠️ Key Distinction:
- If the product is a powder/liquid chemical blend specifically for desulfurization → Go to Chapter 38 (Chemical Preparations)
- If it is a simple physical mixture without chemical reaction capabilities → Might be misclassified; ensure it is marketed as a "chemical agent."
📦 2. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Key Classification Logic |
|---|---|---|---|
3824.99.93.86 |
Rubber Desulfurization Agent Composite | Industrial rubber recycling, devulcanization processes | Classified as "Chemical Products & Preparations." Specific sub-code for chemical agents. No material conflict. |
3824.99.93.97 |
Plastic Desulfurization Agent Composite | Used for plastic/rubber blends or specific plastic devulcanization | Same chapter (38), different sub-code for plastic-specific chemical preparations. |
3824.99.93.86 |
Plastic Desulfurization Agent Composite (Alternative) | Can also be classified here if the chemical composition overlaps with rubber agents | "Plastic" component does not conflict with the "Chemical Preparation" nature. |
3206.49.10.00 |
Rubber Coloring Agent Composite | Rubber compounding, coloring, pigment dispersion | Classified as "Pigment Concentrates/Preparations" (Chapter 32). Distinct from desulfurization. |
🔍 Important Note:
-3824.99.93.86is the primary recommendation for Rubber Desulfurization Agents. It covers "Other chemical products and preparations." -3824.99.93.97is for Plastic specific agents. If your product is strictly for rubber, use.86. If it's a dual-use or plastic-focused agent, consider.97or.86depending on the exact chemical formulation. -3206.49.10.00is for Coloring agents only. Do not confuse "Desulfurization" with "Coloring."
💰 3. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: From November 10, 2025 (including subsequent imports)
🎯 1. 3824.99.93.86 — Rubber/Plastic Desulfurization Agent Composite (Most Common)
| Item | Detail |
|---|---|
| Base Tariff Rate | 5.0% (ad valorem) |
| Section 301 Surcharge | +25% (USITC Footnote 9903.88.01) |
| IEEPA Surcharge | +10% (Against China/HK products, effective Nov 10, 2025) |
| Total Tariff Rate | 40.0% |
| Tax Calculation | CIF Value × 40% |
| De Minimis Eligibility | ❌ NOT Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3824.99.93.86 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- The 5% Base Rate is the standard Most Favored Nation (MFN) rate for chemical preparations. - The 25% Section 301 Tariff is a long-standing surcharge on Chinese chemical products. - The 10% IEEPA Surcharge is a new/additional layer effective Nov 2025, specifically targeting certain Chinese imports. - Total 40%: This is a high tariff burden. Accurate classification is critical to avoid penalties.
🎯 2. 3824.99.93.97 — Plastic Desulfurization Agent Composite
| Item | Detail |
|---|---|
| Base Tariff Rate | 5.0% |
| Section 301 Surcharge | +25% |
| IEEPA Surcharge | +10% |
| Total Tariff Rate | 40.0% |
| Tax Calculation | CIF Value × 40% |
| De Minimis Eligibility | ❌ NOT Eligible |
📌 Note:
- Same tariff structure as.86. The sub-code difference is administrative within Chapter 38, but the surcharge applies equally.
🎯 3. 3206.49.10.00 — Rubber Coloring Agent Composite (Alternative/If Misclassified)
| Item | Detail |
|---|---|
| Base Tariff Rate | 5.9% |
| Section 301 Surcharge | +25% |
| IEEPA Surcharge | +10% |
| Total Tariff Rate | 40.9% |
| Tax Calculation | CIF Value × 40.9% |
| De Minimis Eligibility | ❌ NOT Eligible |
📌 Warning:
- If you market a product as a "Coloring Agent" but it is used for "Desulfurization," Customs may reclassify it to3824.99.93.86(40.0%) or penalize for misdeclaration. - If it is genuinely a coloring agent, the rate is slightly higher (40.9%) due to a higher base rate (5.9% vs 5.0%).
🛠️ 4. Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Preparation Checklist (Mandatory Documents)
| Document | Required | Description |
|---|---|---|
| ✅ Technical Data Sheet (TDS) | ✔️ | Must explicitly state "Desulfurization Agent" or "Devulcanization Reagent." Include chemical composition (MSDS). |
| ✅ Product Photos | ✔️ | Show packaging, label, and form (powder/liquid). |
| ✅ Commercial Invoice | ✔️ | Clearly describe as "Chemical Desulfurization Agent for Rubber Recycling," NOT "Rubber Scrap" or "Plastic Additive." |
| ✅ Certificate of Origin | ✔️ | To verify Chinese origin for surcharge calculation. |
| ✅ HS Code Pre-Ruling | ✔️ | Highly Recommended. Apply to US CBP for a binding ruling to avoid audits. |
✅ 2. Declaration Tips (Critical Mnemonic)
🔥 "Function First, Chemical Second, Name Precise, Tariff Clear!"
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Rubber Devulcanization | 3824.99.93.86 - "Rubber Desulfurization Agent" |
Mislabeling as "Rubber Powder" → 0% tariff but illegal misdeclaration |
| Plastic Devulcanization | 3824.99.93.97 or .86 |
Mixing rubber/plastic agents without clarity |
| Coloring Agent | 3206.49.10.00 - "Rubber Coloring Paste" |
Calling a coloring agent a "desulfurizer" to lower tariff (risky) |
| Mixed Chemicals | Separate lines for each function | Bundling into one generic "Chemical Mix" → High audit risk |
✅ 3. Special Handling
| Situation | Recommendation |
|---|---|
| OEM/Private Label | Provide contract and formula sheets to prove chemical nature. |
| Multiple Functions | If a product is both a desulfurizer AND a coloring agent, consult a customs broker. Likely falls under 3824.99.93.86 as a "Chemical Preparation." |
| Sample Shipments | Still subject to 40% tariff. Do not use De Minimis (800 USD) exemption. |
🌍 5. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff Rate | Certification Required | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3824.99.93.86 |
40.0% (China) | None specific | High surcharges. Strict on chemical declarations. |
| 🇨🇳 China | 3824.99.93.86 |
5% (Import) | - | Standard chemical import. |
| 🇪🇺 EU | 3824.99.93 |
~4-6% | REACH Registration | REACH compliance is critical for chemicals. |
| 🇯🇵 Japan | 3824.99.90 |
3-5% | JIS Standard | Check MSDS requirements. |
| 🇬🇧 UK | 3824.99.90 |
4% | UK REACH | Post-Brexit chemical regulations apply. |
📌 Conclusion:
- The US market has the highest barrier due to the 40% total tariff.
- EU and Japan require strict chemical registration (REACH/JIS) but have lower tariffs.
- Accuracy in HS Code is vital to avoid penalties in the US.
📌 6. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Declaring "Desulfurization Agent" as "Rubber Scrap" or "Waste Rubber"
👉 Consequence: Illegal Misdeclaration. Rubber scrap has 0% tariff, but chemicals are 40%. Penalty + Back Taxes + Possible seizure.
❌ Error 2: Using a generic name like "Chemical Mix" without specifying function
👉 Consequence: Customs may assign a default higher tariff or reject the entry for lack of detail.
❌ Error 3: Ignoring IEEPA Surcharges
👉 Consequence: Underpayment of 10% + Interest. Since Nov 2025, this is mandatory.
❌ Error 4: Confusing "Desulfurization" with "Coloring"
👉 Consequence: 3206.49.10.00 (40.9%) vs 3824.99.93.86 (40.0%). Small difference, but misclassification leads to audits.
✅ Correct Approach:
"Chemical Desulfurization Agent for Rubber Recycling, Powder Form, HS Code 3824.99.93.86, MSDS Attached, Made in China"
🎯 7. Conclusion: Professional Declaration, Cost Control!
🎯 Remember the Motto:
🔹 "Function Defines Code, Chemical Defines Tariff, IEEPA Adds 10%, 301 Adds 25%, Total 40%!"
🔹 "Don't Call Chemical Scrap! Pay the 40% or Face the Audit!"
📌 Pro Tip:
- If your product is exported from Vietnam, Malaysia, or Thailand, check for IEEPA Exemptions or lower tariffs.
- Apply for an Advance Ruling from US CBP before the first shipment to lock in the HS Code and tariff rate.
📣 Immediate Action:
📞 Contact a licensed customs broker + Provide TDS/MSDS + Apply for Pre-Ruling
🚀 Ensure smooth clearance, avoid 40% shock, and maximize profit margins!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Dollar Saved is Earned Through 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.