橡胶防焦助剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 4005990000 | 35.0% | CN | US | Official Doc |
| 3824992900 | 41.5% | CN | US | Official Doc |
| 4005910000 | 35.0% | CN | US | Official Doc |
| 3812399000 | 40.0% | CN | US | Official Doc |
| 3812310000 | 41.5% | CN | US | Official Doc |
AI Analysis
🛡️ Rubber Anti-Scorching Additives (Rubber Processing Auxiliary Agents)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Level Clearance Strategy
📌 I. Product Definition & Classification: What Exactly Are "Anti-Scorching Additives"?
Rubber anti-scorching additives (also known as scorch inhibitors) are crucial chemical auxiliary agents in the rubber industry. They are added to rubber compounds to prevent premature vulcanization (scorching) during mixing, processing, and storage, while still allowing normal curing during the final vulcanization process.
In international trade, their classification depends on whether they are viewed as: 1. Prepared Rubber Compounds/Additives: Mixed preparations intended for rubber processing. 2. Chemical Preparations: Specific chemical stabilizers or antioxidants.
⚠️ Key Distinction Point:
- If the product is a mixed rubber preparation containing these additives, it may fall under Chapter 40 (Rubber).
- If the product is a standalone chemical chemical agent (like an antioxidant or stabilizer) used as an additive, it may fall under Chapter 38 (Chemical Products).
- Crucial Note: Customs classification often hinges on the primary function and composition. Anti-scorching agents are frequently classified under Chapter 38 as "prepared rubber accelerators" or "anti-oxidants/stabilizers," but some specific mixtures might be classified under Chapter 40. The data provided suggests multiple possible classifications depending on the specific chemical nature and intended use description.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Tax Rate (Total) |
|---|---|---|---|
4005.99.00.00 |
Rubber anti-scorching agent, material matches rubber-related chemicals, form fits "other prepared rubbers" | Unvulcanized rubber compounds containing additives | 35.0% |
3824.99.29.00 |
Rubber anti-scorching agent, belongs to chemical additives, fits "chemical products and preparations" | General chemical stabilizers or mixed preparations | 41.5% |
4005.91.00.00 |
Rubber anti-scorching agent, belongs to rubber processing chemical additives, fits "unvulcanized rubber"范畴 | Rubber processing aids, unvulcanized rubber category | 35.0% |
3812.39.90.00 |
Rubber anti-scorching agent, rubber material match, anti-scorching fits "antioxidant preparations and other composite stabilizers" | Composite stabilizers, antioxidant preparations | 40.0% |
3812.31.00.00 |
Rubber anti-scorching agent, rubber material match, fits "chemical stabilizers/antioxidants" | Specific chemical stabilizers/antioxidants for rubber | 41.5% |
🔍 Important Reminder:
- Chapter 40 Codes (4005.xx): Generally apply if the product is considered a "prepared rubber" or a specific rubber processing additive directly linked to the rubber form.
- Chapter 38 Codes (3812.xx, 3824.xx): Generally apply if the product is considered a standalone chemical preparation, antioxidant, or stabilizer, even if used in rubber.
- Tax Difference: The total tax rate varies from 35.0% to 41.5%, primarily due to differences in base tariffs (0% vs 5% vs 6.5%) combined with identical附加 taxes.
💰 III. 2026 Latest Tariff Rate Detailed Explanation (Including Additional Taxes, Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Time: From November 10, 2025 (including subsequent imports)
🎯 1. 4005.99.00.00 & 4005.91.00.00 —— Rubber Prepared Compounds / Unvulcanized Rubber Additives
| Item | Content |
|---|---|
| Base Tariff | 0% (ad valorem) |
| USITC Additional Tax | +25% (Under USITC Footnote 9903.88.01 / Section 301) |
| IEEPA Additional Tax | +10% (For China/HK products, effective from Nov 10, 2025) |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Eligibility | ❌ No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:4005.99.00.00 / 4005.91.00.00 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- "USITC Additional Tax 25%" comes from the "Additional Tariffs" under Section 301 of the U.S. Trade Act.
- "IEEPA 10%" is the additional tariff on Chinese products under the International Emergency Economic Powers Act.
- Total 35%: This is a high tariff rate, requiring advance planning.
🎯 2. 3824.99.29.00 —— Other Chemical Preparations
| Item | Content |
|---|---|
| Base Tariff | 6.5% |
| USITC Additional Tax | +25% |
| IEEPA Additional Tax | +10% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF × 41.5% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3824.99.29.00 → FOOTNOTE:9903.88.01 |
📌 Note:
- Higher base tariff (6.5%) leads to a higher total rate compared to Chapter 40 codes.
- This classification is used when the product is strictly viewed as a general chemical preparation rather than a rubber-specific compound.
🎯 3. 3812.39.90.00 —— Other Prepared Rubber Accelerators / Stabilizers
| Item | Content |
|---|---|
| Base Tariff | 5.0% |
| USITC Additional Tax | +25% |
| IEEPA Additional Tax | +10% |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF × 40.0% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3812.39.90.00 → FOOTNOTE:9903.88.01 |
📌 Note:
- Falls under "Prepared rubber accelerators, vulcanizers and other prepared compounds."
- Base tariff is 5%, resulting in a 40% total rate.
🎯 4. 3812.31.00.00 —— Prepared Rubber Accelerators / Anti-oxidants
| Item | Content |
|---|---|
| Base Tariff | 6.5% |
| USITC Additional Tax | +25% |
| IEEPA Additional Tax | +10% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF × 41.5% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3812.31.00.00 → FOOTNOTE:9903.88.01 |
📌 Note:
- Specifically for "Prepared rubber accelerators and vulcanizers" or "Anti-oxidants."
- Higher base tariff leads to the highest total rate among the options.
🛠️ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Avoidance Guide)
✅ 1. Required Documentation Checklist (All Mandatory)
| Document | Required | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must include chemical composition, CAS numbers (if applicable), function (anti-scorching), and usage instructions. |
| ✅ Formula/Composition | ✔️ | Crucial for determining HS Code. Is it a pure chemical or a mixture? |
| ✅ Product Photos | ✔️ | Clear images of packaging, label, and product form (powder, liquid, pellet). |
| ✅ Third-Party Test Report | ✔️ | MSDS (Material Safety Data Sheet) is critical for chemical imports. |
| ✅ Commercial Invoice | ✔️ | Must clearly state "Rubber Anti-Scorching Additive" or "Chemical Stabilizer." |
| ✅ Certificate of Origin (CO) | ✔️ | If not from China, can apply for preferential rates. |
| ✅ Packing List | ✔️ | Detailed weight and quantity info. |
✅ 2. Declaration Tips (Key Mantra)
🔥 “Composition is King, Function is Queen, Code Must Be Clear, Taxes Won’t Be Mean!”
| Scenario | Correct Declaration Approach | Wrong Approach |
|---|---|---|
| Pure Chemical Anti-Scorching Agent | 3812.31.00.00 or 3812.39.90.00 |
Misdeclare as rubber compound → 35% |
| Mixed Rubber Compound containing additive | 4005.99.00.00 or 4005.91.00.00 |
Misdeclare as pure chemical → 41.5% |
| General Chemical Preparation | 3824.99.29.00 |
Misdeclare as specific accelerator → 40% |
| Unvulcanized Rubber with Additives | 4005.91.00.00 |
Misdeclare as finished rubber product → Potential penalties |
📌 Note:
- If the product is a pure chemical (e.g., a specific antioxidant like 6PPD or TBZD), Chapter 38 is more appropriate.
- If the product is a pre-mixed rubber compound (e.g., masterbatch), Chapter 40 is more appropriate.
- Do NOT mix declarations. Keep consistent with the product's physical and chemical nature.
✅ 3. Special Situation Handling
| Situation | Handling Advice |
|---|---|
| MSDS Required | Always provide MSDS. US Customs and CBP require it for chemical goods. |
| CAS Number | Provide CAS numbers for each active ingredient. This helps CBP verify the exact chemical identity. |
| OEM Custom Mix | Provide customer order + formula details. Avoid vague descriptions like "Rubber Additive." |
| Use in Medical Devices | If used in medical rubber components, additional FDA regulations may apply, but HS Code remains based on chemical nature. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirements | Remarks |
|---|---|---|---|---|
| 🇺🇸 USA | 3812.31.00.00 or 4005.99.00.00 |
35% - 41.5% | MSDS + CE/RoHS (if applicable) | Highest tariffs due to Section 301 + IEEPA. |
| 🇨🇳 China | 3812.31.00.00 or 4005.99.00.00 |
5% - 6.5% | None | No additional tariffs. |
| 🇪🇺 EU | 3812.31.00.00 or 4005.99.00.00 |
0% - 5% (if REACH compliant) | REACH Registration | No additional tariffs. |
| 🇦🇺 Australia | 3812.31.00.00 or 4005.99.00.00 |
5% | None | No additional tariffs. |
| 🇯🇵 Japan | 3812.31.00.00 or 4005.99.00.00 |
0% - 5% | None | No additional tariffs. |
📌 Conclusion:
- USA is the most challenging market due to high combined tariffs (35%-41.5%).
- EU, Australia, Japan have much lower tariff burdens, making them more attractive if supply chain flexibility allows.
📌 VI. Common Mistakes & Pitfall Avoidance (Blood and Tears Lessons)
❌ Mistake 1: Declaring a pure chemical as a rubber compound
👉 Consequence: Potential misclassification penalty. If CBP disagrees, you may face back taxes and fines.
👉 Correct: Use Chapter 38 for pure chemicals.
❌ Mistake 2: Declaring a mixed rubber compound as a pure chemical
👉 Consequence: Underpayment of tariffs (if base rate is lower). CBP may assess higher duties.
👉 Correct: Use Chapter 40 for mixed compounds.
❌ Mistake 3: Vague description "Rubber Additive"
👉 Consequence: CBP will detain and reclassify, causing delays and storage fees.
👉 Correct: Be specific: "Rubber Anti-Scorching Agent, Chemical Name: XXX, CAS: YYY."
❌ Mistake 4: Ignoring MSDS
👉 Consequence: Shipment held at customs until MSDS is provided.
👉 Correct: Always include MSDS in documentation.
✅ Correct Approach:
“Rubber Anti-Scorching Additive, Chemical Name: N-Cyclohexyl-2-benzothiazole sulfenamide, CAS No.: 95-33-4, Powder Form, for Rubber Processing”
🎯 VII. Conclusion: Professional Declaration, Save Time and Money!
🎯 Remember the Mantra:
🔹 “Composition Dictates Code, Chapter 38 vs 40, Choose Wisely, Taxes Won’t Soothe!”
🔹 “HS Code Determines Destiny, Tax Rate Differs by 10 Points, One Step Wrong, Costs Go Up!”
📌 Tips:
- If your product is originally from Vietnam, Mexico, Thailand, or Malaysia, you may apply for IEEPA Exemptions, reducing tariffs to 0%~5%.
- Apply for Advance Rulings (CBP Rulings) before shipment to avoid clearance risks.
📣 Immediate Action:
📞 Contact Professional Customs Brokers + Provide Product Photos & Formula + Apply for HS Code Advance Ruling
🚀 Let Your Rubber Additives Clear Customs Smoothly, Efficiently, and Profitably!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Cent of Your Cost Deserves to Be Precisely Calculated!
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) — 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.