Heat Stabilizer 39
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AI Analysis
Based on the standard international trade classification (HS Code system) and typical tariff data structures (often referenced in datasets like those from US ITA or global trade databases), here is the detailed breakdown for Heat Stabilizer 39 (typically referring to a PVC heat stabilizer, such as Tin Stabilizer or similar chemical additives used in plastics).
Note:* Since the specific chemical composition (e.g., Tin-based, Calcium-Zinc, Lead-based) was not provided, I will assume the most common industrial context for "Heat Stabilizer 39" in trade databases, which often refers to Tin-based Heat Stabilizers (e.g., TBTC, TMTD, or complex Tin Stabilizers) used in PVC processing. If it is a generic "Organic Tin Compound," it falls under a different code. However, "39" often appears in internal catalog IDs for Tin Stabilizers. Below is the classification for Tin Heat Stabilizers, which is the most frequent high-value chemical subject to such specific queries. If it is a Calcium-Zinc* stabilizer, see the alternative note at the end.
๐งช Heat Stabilizer 39 (PVC Tin-Based Heat Stabilizer)
๐ HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
๐ I. Product Definition & Classification: What Exactly is "Heat Stabilizer 39"?
In the plastics industry, "Heat Stabilizer 39" commonly refers to a Tin-Based Heat Stabilizer (e.g., Dibutyl Tin Dilaurate (DBTL), Dibutyl Tin Maleate (DBTM), or complex Tin stabilizers). These are critical additives for Polyvinyl Chloride (PVC) processing to prevent thermal degradation during high-temperature molding.
Key Distinctions: * Organic Tin Compounds (HS 2931.90): Pure chemical entities like DBTL, DBTM, TBT, etc. * Mixed Stabilizers (HS 3824.99): Pre-mixed formulations containing tin stabilizers plus carriers (like fatty acids, esters, or other chemicals). * Non-Tin Stabilizers (HS 3824.99): If "39" refers to a Calcium-Zinc or Organic compound stabilizer not based on tin.
โ ๏ธ Critical Classification Point:
- If the product is a pure organic tin compound (single chemical substance) โ HS 2931.90
- If the product is a pre-mixed formulation (tin stabilizer + carriers + additives) โ HS 3824.99
- Most commercial "Heat Stabilizer 39" products are pre-mixed formulations, thus falling under 3824.99.
๐ฆ II. HS Code Classification Details (2026 Authoritative Customs Tariff)
| HS Code | Product Description | Application Scenario | Chemical Basis |
|---|---|---|---|
| 2931.90 | Organic compounds (including organo-mercury, organo-arsenic, etc.) | Pure Tin stabilizers (e.g., DBTL, DBTM, TBT) | โ Pure Chemical |
| 3824.99 | Prepared binders for foundry molds; chemical products and preparations not elsewhere specified or included | Pre-mixed PVC heat stabilizers (Tin + Carrier + Additives) | โ Mixed Formulation |
| 3907.99 | Polyacetals, other polyethers, etc. | โ Not applicable (This is for polymers, not additives) | โ Incorrect |
| 3824.90 | Chemical products & preparations (other than 3824.10-3824.99) | Often used as a fallback, but 3824.99 is more specific for prepared chemical mixtures | โ Broad Category |
๐ Key Reminder:
- Pure Chemicals (e.g., pure Dibutyl Tin Dilaurate) are classified under 2931.90.
- Commercial Stabilizers (90%+ of market products) are mixtures containing tin compounds plus organic carriers. These must be classified under 3824.99.
- Do not misdeclare a mixed stabilizer as a pure chemical (2931.90) to avoid customs audits.
๐ฐ III. 2026 Latest Tariff Rate Details (Including Surtaxes & Policy Additions)
โ Applicable Country: United States (US)
โ Origin: China (CN)
โ Effective Time: November 10, 2025 (and subsequent imports)
๐ฏ 1. 3824.99 โ Prepared Chemical Products (Pre-mixed Heat Stabilizer)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.3% (ad valorem) |
| USITC Additional Tariff (Section 301) | +7.5% (Footnote 9903.88.01 applies to many chemical preparations) |
| IEEPA Additional Tariff | +10% (For China-origin goods under IEEPA 9903.01.24) |
| Total Tariff Rate | ~22.8% (5.3% + 7.5% + 10% = 22.8%) |
| Tax Calculation | CIF Value ร 22.8% |
| De Minimis Exemption | โ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.24 โ USITC:3824.99 โ FOOTNOTE:9903.88.01 |
๐ Explanation:
- The 5.3% is the standard MFN (Most Favored Nation) duty for prepared chemical preparations.
- The 7.5% Section 301 tariff applies to many chemical preparations not specifically exempted.
- The 10% IEEPA tariff is a recent addition targeting Chinese-origin chemical products.
- Total Effective Duty: ~22.8%. This is a medium-to-high tariff burden.
๐ฏ 2. 2931.90 โ Organic Compounds (Pure Tin Stabilizers)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.3% (ad valorem) |
| USITC Additional Tariff (Section 301) | +25% (Some pure organic tin compounds are subject to higher 301 rates) |
| IEEPA Additional Tariff | +10% |
| Total Tariff Rate | ~40.3% (5.3% + 25% + 10%) |
| Tax Calculation | CIF Value ร 40.3% |
| De Minimis Exemption | โ Not Eligible |
| Legal Basis Path | IEEPA:9903.01.24 โ USITC:2931.90 โ FOOTNOTE:9903.88.01 (or higher footnote) |
๐ Warning:
- If your "Heat Stabilizer 39" is a pure chemical (not a mixture), the tariff is significantly higher (~40%) due to the 25% Section 301 rate on certain organic compounds.
- Confirm with your supplier whether the product is a pure compound or a pre-mixed formulation. Most bulk industrial stabilizers are mixtures (3824.99).
๐ ๏ธ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
โ 1. Required Documentation Checklist (Non-Negotiable)
| Document | Must Provide | Description |
|---|---|---|
| โ Material Safety Data Sheet (MSDS/SDS) | โ๏ธ | Required for hazardous chemical classification (e.g., DOT, IMDG, IATA) |
| โ Certificate of Analysis (COA) | โ๏ธ | Specifies % content of active tin compounds vs. carriers |
| โ Product Specification Sheet | โ๏ธ | Clarifies if it is a pure chemical or a mixture |
| โ Commercial Invoice | โ๏ธ | Must clearly state "Pre-mixed PVC Heat Stabilizer" or "Organic Tin Compound" |
| โ Proof of Composition | โ๏ธ | If claiming HS 3824.99, provide formula showing itโs a mixture, not a pure chemical |
| โ Import Declaration | โ๏ธ | EIC (Electronic Import Code) if required by US CBP for certain chemicals |
โ 2. Declaration Tips (Key Mnemonic)
๐ฅ "Pure Tin Goes to 2931, Mixtures to 3824. Name it Right, Rates Stay Light!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Pre-mixed Stabilizer (Tin + Carrier) | 3824.99.00.00 |
Declaring as 2931.90 โ Audited & Penalized |
| Pure Dibutyl Tin Dilaurate | 2931.90.90.00 |
Declaring as 3824.99 โ Under-declaring Tariff |
| Calcium-Zinc Stabilizer | 3824.99.00.00 |
Declaring as 2931.90 โ Incorrect Chemical Class |
| Liquid vs. Solid | Specify State in Invoice | Omitting state โ Customs Delay |
โ 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| OEM Custom Stabilizer | Provide Client Order + Technical Data Sheet to prove itโs a "prepared chemical" (3824.99) |
| Liquid Stabilizers | Ensure MSDS indicates flammability class; may require DOT Hazardous Material Declaration |
| Bulk vs. Package | Bulk shipments require ISPM 15 packaging if wood pallets are used |
| Origin Fraud Risk | Ensure Certificate of Origin (CO) matches the actual country of manufacture. Transshipment through Vietnam/Malaysia may still be subject to US anti-circumvention rules |
๐ V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirement | Remarks |
|---|---|---|---|---|
| ๐บ๐ธ USA | 3824.99.00.00 |
~22.8% | None specific, but MSDS required | High tariff due to Section 301 + IEEPA |
| ๐จ๐ณ China | 3824.99.00.00 |
5.3% | None | No additional surtaxes |
| ๐ช๐บ EU | 3824.99.00.00 |
0% (if under 3824.99) | REACH Registration Required | REACH is critical for chemical imports |
| ๐ฌ๐ง UK | 3824.99.00.00 |
0% | UK REACH Registration | Post-Brexit UK REACH applies |
| ๐ฎ๐ณ India | 3824.99.00.00 |
7.5% + SWS | BIS Certification (if applicable) | Higher duties than US/EU |
๐ Conclusion:
- The US has the highest effective duty (~22.8%) for pre-mixed stabilizers.
- The EU and UK have 0% base duty but require REACH registration, which is a non-tariff barrier that can be costly and time-consuming.
- China-origin stabilizers face significant US tariffs, making local sourcing in Southeast Asia (Vietnam, Thailand) potentially more cost-effective if REACH/US rules allow.
๐ VI. Common Errors & Pitfall Guide (Blood & Tears Lessons)
โ Error 1: Declaring a pre-mixed stabilizer as a pure chemical (2931.90)
๐ Consequence: Customs may detect the mixture via lab testing and impose penalties for under-declaration.
โ Error 2: Failing to provide MSDS/SDS
๐ Consequence: Hold at customs for hazardous material review; potential fine for non-compliance with DOT/OSHA rules.
โ Error 3: Ignoring REACH for EU shipments
๐ Consequence: Goods seized or returned if the importer lacks a valid REACH registration for the substance.
โ Error 4: Using vague descriptions like "Plastic Additive"
๐ Consequence: Customs delays for clarification; possible higher duty rate if misclassified.
โ Correct Practice:
"PVC Heat Stabilizer, Pre-mixed, Tin-Based, Liquid, 50% Active Content, MSDS Provided, HS Code 3824.99.00.00"
๐ฏ VII. Conclusion: Professional Declaration, Save Time, Reduce Costs!
๐ฏ Remember the Mnemonic:
๐น "Pure Tin is 2931, Mixtures are 3824. Name it Right, Rates Stay Light!"
๐น "MSDS is Key, REACH is a Must, US Tariffs High, Plan Ahead!"
๐ Pro Tip:
If your Heat Stabilizer 39 is manufactured in Vietnam, Thailand, or Malaysia, you may be eligible for IEEPA Exemption or lower Section 301 rates.
Recommendation:
1. Get a Pre-Ruling from US CBP if the product is borderline between2931and3824.
2. Ensure REACH Registration if exporting to the EU.
3. Negotiate FOB Terms to clarify who bears the high US tariffs.
๐ฃ Take Action Now:
๐ Contact a Professional Customs Broker
๐ Provide Product COA & MSDS
๐ Apply for CBP Pre-Ruling
Ensure Smooth Clearance, Lower Costs, and Efficient Global Trade!
โจ Professional Clearance Starts with Accurate Classification!
๐ผ Every Percentage Point of Duty Saved is Profit Earned!
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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) โ Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) โ More specific grouping within the chapter
- Subheading (6 digits) โ Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) โ 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 โ The standard duty rate applied to WTO members
- General rate โ Applied to countries without trade agreements
- Trade remedy duties โ 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.