Phosphate Ester Binder Antioxidant
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3506915000 | 37.1% | CN | US | Official Doc |
| 2919905010 | 38.7% | CN | US | Official Doc |
| 2919905050 | 38.7% | CN | US | Official Doc |
| 3824920000 | 40.0% | CN | US | Official Doc |
| 3824999361 | 40.0% | CN | US | Official Doc |
AI Analysis
π§ͺ Phosphate Ester Binder Antioxidant
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
π I. Product Definition & Classification: What is a "Phosphate Ester Binder Antioxidant"?
A Phosphate Ester Binder Antioxidant is a specialized chemical additive used primarily in industrial applications such as lubricants, hydraulic fluids, battery electrolytes, or advanced materials (e.g., lithium-ion battery binders). It serves a dual or combined function: 1. Binding/Adhesion: Acting as a phosphate ester polymer or derivative to bind materials together. 2. Antioxidant/Flame Retardant: Phosphate esters are well-known for their flame-retardant properties and ability to stabilize materials against oxidation.
In international trade, this product is classified based on its primary chemical structure (phosphate ester) and primary commercial use (binder/adhesive vs. general chemical preparation). The U.S. Customs and Border Protection (CBP) scrutinizes such hybrid products carefully to determine if they fall under chemical chapters (Chapter 29/38) or adhesive chapters (Chapter 35).
β οΈ Key Distinction Point:
- If the product is primarily a pure phosphate ester chemical used as a binding agent β Likely Chapter 29 (Organic Chemicals).
- If the product is a mixture/preparation where the phosphate ester is a component in a broader adhesive/binder formulation β Likely Chapter 38 (Miscellaneous Chemical Products) or Chapter 35 (Albuminoidal substances; modified starches; glues).
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data, here are the five most relevant HS Codes for "Phosphate Ester Binder Antioxidant," analyzed by their specific classification logic and tax implications.
| HS Code | Product Description | Applicability Scenario | Key Classification Logic |
|---|---|---|---|
3506.91.50.00 |
Adhesives based on phosphate ester polymers/chemicals | Industrial adhesives, pressure-sensitive tapes, binder formulations | Primary Use: Adhesive Classified under Chapter 35 because the product is prepared for binding purposes. |
2919.90.50.10 |
Phosphate ester material, binder as a derivative use | Pure or near-pure phosphate esters used in binding applications | Primary Structure: Organic Chemical Classified under Chapter 29 because the core identity is the phosphate ester chemical itself. |
2919.90.50.50 |
Phosphate ester material, binder attribute consistent with chemical | Phosphate esters used in battery electrolytes or industrial binders | Primary Structure: Organic Chemical Similar to above, emphasizes the chemical nature over the adhesive function. |
3824.92.00.00 |
Phosphate ester structural feature match, binder fits prepared adhesive use | Complex mixtures where phosphate ester is a key ingredient in a "prepared adhesive" | Primary Use: Prepared Chemical Chapter 38 covers "prepared binders" not elsewhere specified. |
3824.99.93.61 |
Contains phosphorus atoms, binder belongs to chemical preparation use | Broad chemical preparations containing phosphate esters for binding | Primary Use: Miscellaneous Chemical Covers other chemical preparations including those with phosphorus content for binding. |
π Critical Reminder:
- Chapter 35 (3506...) is often chosen if the product is explicitly marketed and sold as an adhesive/binder.
- Chapter 29 (2919...) is chosen if the product is a bulk chemical raw material (phosphate ester) that can be used as a binder but is not formulated as a ready-to-use adhesive.
- Chapter 38 (3824...) is a catch-all for preparations where the chemical nature is secondary to the functional preparation.
π° III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes, Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: November 10, 2025 (and subsequent imports)
π― 1. 3506.91.50.00 ββ Adhesives based on Phosphate Esters
| Item | Content |
|---|---|
| Base Tariff Rate | 2.1% (ad valorem) |
| USITC Surtax (Section 301) | +25.0% |
| IEEPA Surtax (Section 122/China-specific) | +10.0% |
| Total Tax Rate | 37.1% |
| Tax Calculation | CIF Value Γ 37.1% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.24 β USITC:3506.91.50.00 β FOOTNOTE:301.9903.88.01 |
π Explanation:
- Although the base tariff is low (2.1%), the 25% Section 301 tariff and 10% IEEPA surcharge push the total to 37.1%.
- This code is favorable compared to others due to the lower base rate, but still heavily taxed.
π― 2. 2919.90.50.10 & 2919.90.50.50 ββ Phosphate Ester Chemicals
| Item | Content |
|---|---|
| Base Tariff Rate | 3.7% (ad valorem) |
| USITC Surtax (Section 301) | +25.0% |
| IEEPA Surtax (Section 122/China-specific) | +10.0% |
| Total Tax Rate | 38.7% |
| Tax Calculation | CIF Value Γ 38.7% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.24 β USITC:2919.90.50.10 β FOOTNOTE:301.9903.88.01 |
π Note:
- These two codes are nearly identical in tax treatment.
- The higher base rate (3.7% vs 2.1%) results in a 1.6% higher total tax compared to3506.91.50.00.
- Applicable when the product is classified as an organic chemical rather than a prepared adhesive.
π― 3. 3824.92.00.00 ββ Prepared Binders (Chapter 38)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.0% (ad valorem) |
| USITC Surtax (Section 301) | +25.0% |
| IEEPA Surtax (Section 122/China-specific) | +10.0% |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF Value Γ 40.0% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.24 β USITC:3824.92.00.00 β FOOTNOTE:301.9903.88.01 |
π Warning:
- This code has the highest base rate (5.0%), leading to the highest total tax burden (40.0%).
- Only choose this if the product is clearly a preparation that doesn't fit the specific "phosphate ester" or "general adhesive" definitions in other codes.
π― 4. 3824.99.93.61 ββ Other Chemical Preparations
| Item | Content |
|---|---|
| Base Tariff Rate | 5.0% (ad valorem) |
| USITC Surtax (Section 301) | +25.0% |
| IEEPA Surtax (Section 122/China-specific) | +10.0% |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF Value Γ 40.0% |
| De Minimis Exemption? | β No (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.24 β USITC:3824.99.93.61 β FOOTNOTE:301.9903.88.01 |
π Note:
- Similar to3824.92.00.00, this is a catch-all code with high tariffs.
- Use only if the specific "phosphate ester binder" code (3824.92) is not applicable.
π οΈ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Guide)
β 1. Document Checklist (Essential)
| Document | Required | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must detail chemical composition (e.g., % of phosphate ester), physical state, and primary function (binding vs. chemical intermediate). |
| β Safety Data Sheet (SDS) | βοΈ | Crucial for chemical classification. Confirm hazard classes and chemical identity. |
| β Certificate of Analysis (COA) | βοΈ | Proves purity and composition, helping distinguish between a "pure chemical" (Ch 29) and a "mixture" (Ch 38). |
| β Commercial Invoice | βοΈ | Must clearly state the exact HS Code and product name (e.g., "Phosphate Ester-Based Adhesive"). |
| β Usage Declaration | βοΈ | Explicitly state: "Used as a binder in [Industry]" or "Used as an antioxidant in [Industry]." |
| β Origin Certificate (CO) | βοΈ | Required for China-origin goods to confirm surtax applicability. |
β 2. Declaration Strategy (Key Mantra)
π₯ βStructure First, Function Second, Name Precise, Tax Minimised!β
| Scenario | Correct Declaration Approach | Incorrect Action |
|---|---|---|
| Pure Phosphate Ester | Classify under 2919.90.50.10/50 (Ch 29). Emphasize chemical structure. |
Misdeclare as "Adhesive" (Ch 35) β Risk of misclassification penalty. |
| Formulated Adhesive | Classify under 3506.91.50.00 (Ch 35). Lowest total tax (37.1%). |
Misdeclare as "Chemical Preparation" (Ch 38) β Higher tax (40%). |
| Complex Mixture | Classify under 3824.92.00.00 or 3824.99.93.61 (Ch 38) only if no better fit exists. |
Assume "Adhesive" if not primarily for bonding β High risk. |
β 3. Special Circumstances Handling
| Situation | Handling Advice |
|---|---|
| Battery Electrolyte Binder | If used in Li-ion batteries, argue for 3506.91.50.00 if it binds electrodes. Provide battery manufacturer confirmation. |
| OEM Custom Chemical | Provide client's technical specification to prove primary use (bind vs. antioxidant). |
| Mixed Packaging | Do not separate "binder" and "antioxidant" components. Declare as one unit. |
| Flame Retardant Claim | If marketed as "Flame Retardant Binder," still use adhesive codes if binding is primary function. |
π V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3506.91.50.00 |
37.1% | TSCA Compliance | Highest risk due to 301/IEEPA tariffs. |
| π¨π³ China | 3506.91.50.00 |
~5-10% | No special | Domestic trade has lower tariffs. |
| πͺπΊ EU | 3506.91.50.00 |
~6.5% | REACH Registration | No surtaxes, but REACH compliance is critical. |
| π―π΅ Japan | 3506.91.50.00 |
~5-7% | FSCA Compliance | Lower tariffs, strict safety standards. |
π Conclusion:
- USA is the most expensive market for this product due to 301 and IEEPA surtaxes.
- EU and Japan have no additional surtaxes, making them more cost-effective for imports from China.
- Always aim for3506.91.50.00to minimize the base tariff burden, even with surtaxes.
π VI. Common Errors & Pitfall Guide (Lessons from Experience)
β Error 1: Declaring a pure chemical as an adhesive
π Consequence: CBP may reclassify to Chapter 29, leading to backdated duties + penalties for misclassification.
β Error 2: Declaring an adhesive as a miscellaneous chemical (3824...)
π Consequence: Paying 40% tax instead of 37.1% unnecessarily. Simple overpayment.
β Error 3: Vague product description ("Chemical Binder")
π Consequence: CBP inspection delay, potential seizure if hazard class is unclear.
β Error 4: Ignoring TSCA (Toxic Substances Control Act) compliance for USA imports
π Consequence: Goods held at port until EPA documentation is provided. Do not skip TSCA certification.
β Correct Approach:
"Phosphate Ester-Based Adhesive, TSCA Compliant, Model XYZ, Used for Battery Electrode Binding"
π― VII. Conclusion: Professional Classification Saves Money!
π― Remember the Mantra:
πΉ "Adhesive First, Tax Low; Chemical Second, Tax High."
πΉ "3506 is the Hero (37.1%); 3824 is the Villain (40%); 2919 is the Neutral (38.7%)."
πΉ "HS Code determines fate; one step wrong, thousands lost!"
π Pro Tip:
If your product is originally manufactured in Vietnam, Mexico, or Thailand, you may exempt IEEPA surtaxes, reducing the total tax to ~25-27%.
Recommendation: Apply for an Advance Ruling (CBP Ruling Letter) before shipment to lock in the HS Code and avoid surprises.
π£ Take Action Now:
π Contact a licensed customs broker + Provide SDS + Request TSCA Certification
π Ensure your Phosphate Ester Binder Antioxidant clears customs smoothly, legally, and cost-effectively!
β¨ Professional clearance starts with precise classification!
πΌ Every cent counts in international trade!
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.