橡胶硫化催化剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 2942003500 | 41.5% | CN | US | Official Doc |
| 3812101000 | 41.5% | CN | US | Official Doc |
| 3812105000 | 40.0% | CN | US | Official Doc |
| 2942005000 | 38.7% | CN | US | Official Doc |
| 2942003500 | 41.5% | CN | US | Official Doc |
AI Analysis
🧪 Rubber Vulcanization Catalysts (Sulfur Accelerators & Activators)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Strategic Entry Strategy for US Imports from China
📌 I. Product Definition & Classification: What Exactly Are "Rubber Vulcanization Catalysts"?
Rubber vulcanization catalysts (commonly referred to as Sulfur Accelerators or Vulcanizing Agents) are essential organic chemical additives used in the rubber industry to speed up the vulcanization process and improve the physical properties of rubber products.
In international trade, these products are primarily categorized based on their chemical composition and specific chemical structure. They generally fall into two main buckets: 1. Specific Organic Chemicals (HS Chapter 29): Pure organic compounds with defined molecular structures (e.g., specific sulfur-based accelerators like CBS, TBBS, MBT). 2. Mixed Chemical Preparations (HS Chapter 38): Mixtures, blends, or preparations where the chemical identity is less distinct or combined with other inert carriers.
⚠️ Key Distinction Point:
- If the product is a pure, single organic compound (e.g., N-cyclohexyl-2-benzothiazyl sulfenamide) →归入 HS 2942 ("Other organic compounds").
- If the product is a mixture, preparation, or blended accelerator without a single dominant chemical identity →归入 HS 3812 ("Preparations added to rubber...").
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Material Characteristic |
|---|---|---|---|
2942.00.35.00 |
Other organic compounds: Vulcanization accelerators & antioxidants | Pure organic chemical additives; specific molecular structure | ✅ Organic Compound (Pure) |
3812.10.10.00 |
Preparations for vulcanizing rubber | Mixed preparations; full consistency with rubber accelerator use | ✅ Chemical Preparation (Mixed) |
3812.10.50.00 |
Other preparations for vulcanizing rubber | Fast-acting accelerators; mixed formulations | ✅ Chemical Preparation (Mixed) |
2942.00.50.00 |
Other organic compounds: Synthetic organic products | Pure organic chemical synthesizes; fits "other organic" category | ✅ Organic Compound (Pure) |
🔍 Key Insight:
- HS 2942 is used for pure organic chemicals. The summary confirms these are "organic compounds" fitting the material attribute. - HS 3812 is used for preparations/mixtures. The summary highlights "usage and classification are completely consistent" with rubber accelerators. - Tax Difference: Notice the Base Tariff varies significantly between 2942 (3.7%-6.5%) and 3812 (5.0%-6.5%), impacting the total landed cost.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Add-on Taxes & Policy Surcharge)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: Ongoing (Current US Trade Policy)
🎯 1. 2942.00.35.00 & 3812.10.10.00 —— Pure Organic Accelerators & Mixed Preparations
| Item | Content |
|---|---|
| Base Tariff (MFN) | 6.5% (For 2942.35) / 6.5% (For 3812.10.10) |
| Section 301 Add-on Tariff | +25.0% (Trade Enforcement) |
| Section 122 Tariff | +10.0% (Specific Section 122 Surcharge) |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible (Subject to high tariffs) |
| Legal Basis Path | Section 301 → Section 122 → USITC:2942.00.35.00 / USITC:3812.10.10.00 |
📌 Explanation:
- The 6.5% Base Rate is the standard Most Favored Nation (MFN) rate for these chemical categories. - The 25% Section 301 Tariff is the primary punitive tariff for Chinese goods in this category. - The 10% Section 122 Tariff is an additional surcharge applied to specific imports. - Total 41.5% is a high-cost barrier. Importers must accurately declare the chemical purity to ensure correct HS coding, as misclassification can lead to penalties.
🎯 2. 3812.10.50.00 —— Other Rubber Vulcanization Preparations (Fast-Acting)
| Item | Content |
|---|---|
| Base Tariff (MFN) | 5.0% |
| Section 301 Add-on Tariff | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tariff Rate | 40.0% |
| Tax Calculation | CIF Value × 40.0% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | Section 301 → Section 122 → USITC:3812.10.50.00 |
📌 Note:
- This code applies to mixed preparations that don't fit the specific "accelerator" definition of 3812.10.10 but are still rubber additives. - Savings: It offers a 1.5% lower total rate (40.0% vs 41.5%) compared to2942.00.35.00and3812.10.10.00, due to a lower base rate (5.0% vs 6.5%). - Fast-Acting: The summary mentions "Fast vulcanization does not affect classification," meaning even if the chemical acts quickly, it still falls under this preparation category if it's a mixture.
🎯 3. 2942.00.50.00 —— Other Synthetic Organic Compounds
| Item | Content |
|---|---|
| Base Tariff (MFN) | 3.7% |
| Section 301 Add-on Tariff | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tariff Rate | 38.7% |
| Tax Calculation | CIF Value × 38.7% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | Section 301 → Section 122 → USITC:2942.00.50.00 |
📌 Crucial Note:
- This is the lowest total tariff (38.7%) among all listed codes. - It applies to "Other Synthetic Organic Products" that are pure organic compounds but don't fit the specific "accelerator" subheading of 2942.35. - Strategy: If your catalyst is a pure organic compound that is not explicitly listed under other 2942 subheadings, this might be the optimal classification to save 2.8% in taxes compared to the 41.5% bracket.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance)
✅ 1. Document Preparation Checklist (Non-Negotiable)
| Document | Required | Explanation |
|---|---|---|
| ✅ Technical Data Sheet (TDS) | ✔️ | Must specify chemical name, CAS number, purity, and molecular structure. |
| ✅ MSDS (SDS) | ✔️ | Essential for safety classification and customs hazard assessment. |
| ✅ Formula/Composition Breakdown | ✔️ | Critical for distinguishing between Pure Compound (2942) vs. Mixture (3812). |
| ✅ Commercial Invoice | ✔️ | Clearly state "Rubber Vulcanization Catalyst" or "Sulfur Accelerator". Avoid vague terms like "Additive". |
| ✅ Packing List | ✔️ | Detail net/gross weight, quantity, and package type. |
| ✅ Certificate of Origin | ✔️ | To prove Chinese origin (subject to tariffs). |
✅ 2. Declaration Strategy (Key Mnemonics)
🔥 “Pure Compound vs. Mixture, Check CAS Code First!”
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Pure Organic Accelerator (e.g., TBBS, pure CAS) | 2942.00.35.00 or 2942.00.50.00 |
Misdeclare as 3812 → Higher risk of audit |
| Mixed Accelerator Preparation (Blends) | 3812.10.10.00 or 3812.10.50.00 |
Misdeclare as 2942 → Customs may reject for "not a pure compound" |
| Vague "Rubber Additive" | Specify Exact Chemical Name | Vague description → Delayed clearance, potential penalties |
| Fast-Acting Catalyst | 3812.10.50.00 (if mixed) or 2942 (if pure) |
Ignore speed characteristic → May miss optimal classification |
✅ 3. Special Handling for Organic Compounds
| Situation | Handling Advice |
|---|---|
| OEM Private Label | Provide brand authorization letter. Ensure the chemical name remains consistent with the supplier's MSDS. |
| Multiple CAS Numbers | If the product contains multiple active ingredients, it is likely a Preparation (3812), not a Pure Compound (2942). |
| Hazardous Chemicals | If classified as hazardous, additional DOT/UN packaging certification is required. |
| Small Samples | Even for samples, high tariffs (38.7%-41.5%) apply. Consider "De Minimis" only if under $800 AND not subject to Section 301 (Note: Section 301 often overrides De Minimis for China). |
🌍 V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 2942.00.35.00 / 3812.10.10.00 |
38.7% - 41.5% | MSDS, OSHA Compliance | High tariffs due to Section 301 + 122. |
| 🇨🇳 China | 2942.00.35.00 / 3812.10.10.00 |
6.5% (Export) / 0% (Import) | REACH (if exporting to EU) | Domestic consumption is low tariff. |
| 🇪🇺 EU | 3812.10.00 / 2942.00.90 |
0% - 2.5% | REACH Registration, CLP Labeling | No Section 301 equivalent. REACH is key. |
| 🇬🇧 UK | 3812.10.00 / 2942.00.90 |
0% - 3% | UK REACH, UKCA | Post-Brexit regulations apply. |
| 🇻🇳 Vietnam | 2942.00 / 3812.10 |
0% (if local content) | None | Potential for supply chain diversion. |
📌 Conclusion:
- The US market is the most challenging due to the combination of Base Tariff + Section 301 + Section 122. - EU/UK have much lower tariffs but strict REACH/UK REACH chemical regulations. - Strategy: For US imports, optimal HS coding (choosing 2942.00.50.00 if applicable) can save 2.8% in total taxes.
📌 VI. Common Errors & Pitfall Guide (Lessons Learned)
❌ Error 1: Misclassifying a Mixture as a Pure Compound
👉 Consequence: Customs issues a Rejection or Penalty for incorrect declaration. The product is a mixture, not a single organic compound.
❌ Error 2: Ignoring Section 122 Tariff in Cost Calculation
👉 Consequence: Underestimating landed cost by 10%, leading to negative margins.
❌ Error 3: Using Generic Terms like "Rubber Aid" on Invoice
👉 Consequence: Customs delays for Information Request, causing demurrage fees and storage costs.
❌ Error 4: Assuming De Minimis ($800) Applies
👉 Consequence: Section 301 tariffs often apply to all Chinese goods, regardless of value. Do not assume tax-free entry.
✅ Correct Practice:
"Rubber Vulcanization Accelerator, TBBS, Pure Organic Compound, CAS No. [XXX], MSDS Provided, HS Code: 2942.00.35.00"
🎯 VII. Conclusion: Precise Classification, Cost Control, and Compliance!
🎯 Remember the Mantra:
🔹 "Pure vs. Mixed, Check CAS First."
🔹 "3812 for Mixtures, 2942 for Pure."
🔹 "38.7% to 41.5% is the US Reality."
🔹 "Section 301 + 122 = 35% Surcharge."
📌 Pro Tip:
- If your catalyst is a pure organic compound that doesn't fit the specific "accelerator" list, try to argue for
2942.00.50.00(38.7%) to save 2.8% vs the standard 41.5%.- Always provide a detailed formula breakdown to prove whether it is a Preparation (3812) or Compound (2942).
- Consider Advance Ruling from US Customs if the product composition is complex.
📣 Immediate Action:
📞 Contact your customs broker with the MSDS and Chemical Structure diagram.
🚀 Optimize your HS Code selection to minimize the 41.5% tariff burden.
💼 Your profit margin depends on accurate classification!
✨ Professional customs clearance starts with precise classification!
💼 Every penny of tax saved 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) — 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.