Rubber Accelerator CZ Powder
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 381290 | 0.0% | CN | US | Official Doc |
| 284590 | 0.0% | CN | US | Official Doc |
Product Images
AI Analysis
π§ͺ Rubber Accelerator CZ Powder (Chemical Products)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Entry Strategy
π I. Product Definition & Classification: Do You Really Understand "Rubber Accelerator CZ"?
Rubber Accelerator CZ (also known as CBS, N-Cyclohexyl-2-benzothiazolesulfenamide) is a vital additive in the rubber industry. It is classified as a secondary accelerator and an anti-reversion agent. Its primary function is to retard scorching (premature vulcanization) during processing while ensuring efficient cross-linking during the vulcanization stage.
In international trade, chemical products are highly scrutinized. Since "CZ Powder" is a specific chemical compound, it falls under Chapter 38 (Miscellaneous Chemical Products) rather than Chapter 28 (Inorganic/Inorganic Compounds) or Chapter 29 (Organic Chemicals), depending on the exact regulatory interpretation and composition clarity. However, for generic classification where specific composition is unknown or for "chemical products not elsewhere specified," it is often placed in 3812.90 or 2845.90.
β οΈ Key Distinction:
- If the chemical structure is N-Cyclohexyl-2-benzothiazolesulfenamide (CBS) β It is a specific organic compound. However, if the customs authority views it as a "preparation" or "specification not elsewhere specified," it may fall under 3812.90.
- If the composition is unknown or generic ("unspecified rubber chemicals"), a placeholder classification under 2845.90 (Chemical elements/compounds not specified) may be considered pending exact identification.
- Critical Note: Many customs authorities require precise chemical identity. If the product is pure CBS, Chapter 29 (2934.99) is technically more accurate for organic heterocyclic compounds. However, based strictly on the provided , we analyze the two provided HS Codes.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Reason for Classification |
|---|---|---|---|
3812.90 |
Rubber accelerators, including rubber accelerator CZ powder, classified under chemical products of this chapter not elsewhere specified. | Finished rubber additive, specialized chemical preparation | β Primary Classification: Explicitly mentions "rubber accelerators" and "not elsewhere specified" in Chapter 38. |
2845.90 |
Chemical elements and compounds (including isotopes) not otherwise specified; unspecified rubber chemicals as a placeholder. | Uncertain composition, generic rubber chemical mix, or pending exact chemical ID | β οΈ Alternative/Placeholder: Used only if specific composition is unknown or for general "unspecified" chemical compounds. |
π ιηΉζι (Key Reminders):
- 3812.90 is the preferred code if the product is clearly identified as a "Rubber Accelerator" (like CZ/CBS) and fits the description of "chemical products not elsewhere specified."
- 2845.90 is a fallback for "unspecified chemical elements/compounds." It should not be used if the exact chemical name (CBS) is known, as it implies a lack of specific identification.
- Do NOT split the shipment into different HS codes without valid reason; consistency is key for customs valuation.
π° III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: 2025 November 10 onwards (including subsequent imports)
π― 1. 3812.90 ββ Rubber Accelerators (Not Elsewhere Specified)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.3% (Ad Valorem, HTSUS 3812.90.60) |
| USITC Additional Tariff (Section 301) | +25% (Footnote 9903.88.01) |
| IEEPA Additional Tariff | +10% (Targeting China/HK products, effective Nov 10, 2025) |
| Total Tariff Rate | 40.3% |
| Tax Calculation | CIF Value Γ 40.3% |
| De Minimis Exemption Available? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3812.90.60 β FOOTNOTE:9903.88.01 |
π Explanation:
- Base 5.3%: Standard Most Favored Nation (MFN) rate for miscellaneous chemical products.
- 25% USITC Surcharge: From the US Trade Act Section 301 list, which covers many chemical intermediates and rubber additives.
- 10% IEEPA Surcharge: Additional tariff under the International Emergency Economic Powers Act for Chinese goods.
- Total 40.3%: This is a high tariff burden. Importers must factor this into their landed cost.
π― 2. 2845.90 ββ Unspecified Chemical Elements/Compounds (Placeholder)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.3% (Ad Valorem, HTSUS 2845.90.00) |
| USITC Additional Tariff (Section 301) | +25% (Footnote 9903.88.01) |
| IEEPA Additional Tariff | +10% (Targeting China/HK products, effective Nov 10, 2025) |
| Total Tariff Rate | 40.3% |
| Tax Calculation | CIF Value Γ 40.3% |
| De Minimis Exemption Available? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9901.25 β IEEPA:9903.01.24 β USITC:2845.90.00 β FOOTNOTE:9903.88.01 |
π Note:
- Even if classified under 2845.90, the Section 301 and IEEPA surcharges apply identically if the product is of Chinese origin.
- This code is not a loophole for lower tariffs; it is a classification for unspecified chemicals. Using it incorrectly can lead to customs audits, penalties, or shipment holds for misdeclaration.
- Risk Warning: If customs determines the product is clearly CBS (a specific organic compound), they may reclassify it under Chapter 29 (2934.99), which may have different base rates but still faces 301/IEEPA surcharges.
π οΈ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
β 1. Required Documentation Checklist (All Required)
| Document | Mandatory | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must include chemical name (CBS/CZ), CAS No. (90-71-9), molecular formula, purity (%), and physical state (powder). |
| β Safety Data Sheet (SDS) | βοΈ | Required for chemical products. Must indicate it is non-hazardous or properly classified under DOT/IMDG regulations. |
| β Certificate of Analysis (COA) | βοΈ | Proof of composition and purity, crucial for proving it matches the declared HS code. |
| β Commercial Invoice | βοΈ | Must clearly state "Rubber Accelerator CZ (CBS) Powder" and the exact HS Code. Avoid vague terms like "Chemical Powder." |
| β Packing List | βοΈ | Detail net/gross weight, package type (drums/bags), and material composition of packaging. |
| β Origin Certificate | βοΈ | If claiming preferential treatment (not applicable here due to US-China tariffs), otherwise standard CO. |
| β FDA Registration (if applicable) | βοΈ | If used in food-grade rubber or medical devices, FDA prior notice may be required. |
β 2. Declaration Tips (Key Mantra)
π₯ βName Accurate, CAS Provided, No Vague Terms!β
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Pure CBS Powder | "Rubber Accelerator CZ (CBS), CAS 90-71-9, Purity 98%" | "Chemical Rubber Additive" β Risk of Misclassification |
| Mixed Rubber Chemicals | "Rubber Chemical Preparation (Contains CBS, Sulfur, ZnO)" | Declaring as single ingredient β Fraud Risk |
| Unclear Composition | "Unspecified Rubber Chemical Compound" | Declaring specific name without proof β Audits |
β 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Private Label | Provide the original manufacturerβs COA and technical data sheet to prove chemical identity. |
| Mixed Shipment | If CZ powder is mixed with other rubber chemicals, declare as "Rubber Chemical Preparation" and ensure the primary component is identified. |
| Small Sample Shipments | Even small samples (< $800) are not eligible for de minimis exemption if classified under 3812/2845 for Chinese origin due to surcharges. Declare properly. |
| Hazmat Classification | Verify if the powder is considered hazardous under DOT regulations (flammable dust, health hazard). If yes, additional transport documentation is required. |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3812.90 / 2845.90 |
40.3% (Total) | No specific CE/FCC, but SDS required | High tariffs due to Section 301 & IEEPA |
| π¨π³ China | 3812.90 |
5% - 9% | No special import restrictions | Low tariffs for domestic use |
| πͺπΊ EU | 3812.90 |
5.3% (Base) + VAT | REACH Registration Mandatory | REACH compliance is critical for chemical imports |
| π¬π§ UK | 3812.90 |
5.3% + VAT | UK REACH Registration | Post-Brexit regulations mirror EU REACH |
| π―π΅ Japan | 3812.90 |
5.5% | PRTR Law Compliance | Chemical management law compliance required |
π Conclusion:
- USA: Highest tariff burden (40.3%). Importers must plan for high landed costs.
- EU/UK: REACH/UK REACH registration is the biggest barrier. Even if tariffs are low, non-compliance leads to seizure.
- China: Low tariffs, but environmental and safety regulations are strict for production and import.
π VI. Common Mistakes & Pitfalls (Lessons Learned from Blood)
β Mistake 1: Declaring "CZ Powder" as "General Chemical" without CAS number
π Consequence: Customs request for additional information, delays, or reclassification with penalties.
β Mistake 2: Using 2845.90 for a known CBS product without justification
π Consequence: Customs may argue misdeclaration, leading to audits or fraud investigations.
β Mistake 3: Ignoring REACH (for EU) or DPR (for Japan) registration
π Consequence: Shipment blocked at border, product destroyed or returned.
β Mistake 4: Underestimating the impact of Section 301 & IEEPA tariffs
π Consequence: Unexpected $40.3% tariff cost, eroding profit margins.
β Correct Practice:
"Rubber Accelerator CZ (N-Cyclohexyl-2-benzothiazolesulfenamide), CAS 90-71-9, Purity 98%, Powder, for Rubber Industry Use. HS Code: 3812.90.60. Origin: China."
π― VII. Conclusion: Professional Declaration, Save Time, Reduce Costs!
π― Remember the Mantra:
πΉ "CAS Number is King, HS Code Must Match, Tariffs are High, Compliance is Key!"
πΉ "3812.90 for CZ, 2845.90 for Unspecified, Total Tariff 40.3% for China!"
π Pro Tip:
- If your product is re-exported from a third country (e.g., Vietnam, Malaysia), ensure substantial transformation occurs to avoid USIIC/IEEPA surcharges. Simple repacking does not qualify.
- Consider applying for a Binding Ruling (BR) from US Customs and Border Protection (CBP) to lock in the HS Code and tariff rate before shipping.
π£ Immediate Action:
π Contact a Licensed Customs Broker
π Provide SDS, COA, and Technical Data Sheet
π Apply for a Pre-Ruling to ensure smooth clearance
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every Dollar of Tariff Must Be Justified!
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.