专用分散剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824991100 | 35.0% | CN | US | Official Doc |
| 3824991900 | 41.5% | CN | US | Official Doc |
| 3505100020 | 0.0% | CN | US | Official Doc |
| 3910000000 | 38.0% | CN | US | Official Doc |
| 3505100015 | 0.0% | CN | US | Official Doc |
AI Analysis
🧪 专用分散剂 (Specialized Dispersants)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: Do You Truly Understand "Dispersants"?
Dispersants are critical chemical additives used to separate particles, prevent agglomeration, and ensure uniform distribution within a medium (liquid or solid). In international trade, "Specialized Dispersants" is not a single HS Code but a functional category that splits based on chemical composition and application scenario.
The provided data identifies two main product streams: 1. Crystallization Dispersants (结晶分散剂): Likely synthetic organic/inorganic compounds used in crystal growth or material synthesis. Classified under "Other Chemical Products." 2. Paper Dispersants (纸张分散剂): Functional additives (often starch-based or chemical auxiliaries) used in papermaking or recycling. Classified under "Modified Starches/Glues" or "Chemical Preparations."
⚠️ Key Distinction Point:
- If the product is a synthetic chemical agent for crystal formation or general industrial use without specific starch derivation → Likely Chapter 38.
- If the product is starch-modified or specifically designed for paper recycling/dispersion → Likely Chapter 35.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Base Duty + Surtax | Total Tax Rate |
|---|---|---|---|---|
3824.99.11.00 |
Crystallization Dispersant: Classified under "Other Chemical Products" | General industrial chemical synthesis, crystallization aids | Base: 0% Addl: 25% (Sec 301) 122 Clause: 10% |
35.0% |
3824.99.19.00 |
Crystallization Dispersant: Fits "Other Chemical Products & Preparations" description | Crystal shape cultivation, generic chemical preparations | Base: 6.5% Addl: 25% (Sec 301) 122 Clause: 10% |
41.5% |
3505.10.00.20 |
Paper Dispersant: Chemical auxiliary for papermaking | Paper recycling, modified starch/gum applications | Base: 0.7¢/kg Addl: 7.5% (Sec 301) 122 Clause: 10% |
0.7¢/kg + 17.5% |
3910.00.00.00 |
Paper Dispersant: Functional additive in primary shape form | Chemical/primary shape category for paper additives | Base: 3.0% Addl: 25% (Sec 301) 122 Clause: 10% |
38.0% |
3505.10.00.15 |
Paper Dispersant: Modified starch-based auxiliary (Catch-all for starch derivatives) | Paper manufacturing auxiliaries, starch-modified dispersions | Base: 0.7¢/kg Addl: 7.5% (Sec 301) 122 Clause: 10% |
0.7¢/kg + 17.5% |
🔍 Critical Analysis:
- Chapter 38 (3824.99.11/19): Higher total tax (35%-41.5%). Suitable if the dispersant is a complex synthetic chemical not based on starch.
- Chapter 35 (3505.10.00.15/20): Lower base ad valorem rate (0.7¢/kg flat + lower ad valorem surtax). Best for cost optimization if the product contains modified starch or fits the paper auxiliary definition.
- Chapter 39 (3910.00.00.00): Moderate tax (38.0%). Used if the product is viewed as a polymer/primary shape chemical rather than a specific auxiliary.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: 2025/2026 (Current Trade War Context)
🎯 1. 3824.99.11.00 & 3824.99.19.00 —— Crystallization Dispersants (Chemical Preparations)
| Item | Content |
|---|---|
| Base Duty (MFN) | 0% (for .11) or 6.5% (for .19) |
| Section 301 Surtax | +25% (USITC Footnote 9903.88.01 / Trade Act) |
| Section 122 Clause | +10% (Specific policy add-on for certain chemical products) |
| Total Ad Valorem | 35.0% (for .11) or 41.5% (for .19) |
| Calculation Basis | CIF Value × Total Rate |
| De Minimis Exemption | ❌ Not Eligible (High value goods subject to scrutiny) |
📌 Explanation:
- The 25% Section 301 tariff is standard for most Chinese chemical products.
- The 10% Section 122 tariff adds significant cost.
- Recommendation: If the product is purely chemical and not starch-based,3824.99.11.00is cheaper than.19because it has a 0% base duty.
🎯 2. 3505.10.00.15 & 3505.10.00.20 —— Paper Dispersants (Modified Starches/Auxiliaries)
| Item | Content |
|---|---|
| Base Duty | 0.7 cents/kg (Specific Duty) |
| Section 301 Surtax | +7.5% (Ad valorem) |
| Section 122 Clause | +10% (Ad valorem) |
| Total Effective Rate | 0.7¢/kg + 17.5% |
| Calculation Basis | (Weight in kg × $0.007) + (CIF Value × 17.5%) |
| De Minimis Exemption | ❌ Not Eligible |
📌 Explanation:
- This category is significantly cheaper than Chapter 38 if the product is heavy (high weight) or if the CIF value is high, because the ad valorem component is only 17.5% (7.5% + 10%) vs 35%/41.5%.
- Crucial Condition: The product MUST be classified as "Modified Starch" or "Paper Auxiliary" under HS 3505. Misclassification can lead to penalties.
🎯 3. 3910.00.00.00 —— Paper Dispersant (Primary Shape Polymer)
| Item | Content |
|---|---|
| Base Duty | 3.0% |
| Section 301 Surtax | +25% |
| Section 122 Clause | +10% |
| Total Ad Valorem | 38.0% |
| Calculation Basis | CIF Value × 38.0% |
| De Minimis Exemption | ❌ Not Eligible |
📌 Explanation:
- This is a middle-ground option. It is more expensive than Chapter 35 but slightly cheaper than3824.99.19.00. Use only if the product is a specific polymer not fitting starch definitions.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Documentation Checklist (Non-Negotiable)
| Document | Required | Description |
|---|---|---|
| ✅ Technical Data Sheet (TDS) | ✔️ | Must specify chemical composition. If starch-based, highlight "Modified Starch." |
| ✅ Formula/Composition List | ✔️ | Percentage of active ingredients. Critical for distinguishing Chapter 35 vs. 38. |
| ✅ Application Statement | ✔️ | Explicitly state: "Used in papermaking/recycling" for Chapter 35, or "Used in crystallization" for Chapter 38. |
| ✅ MSDS (SDS) | ✔️ | Safety Data Sheet. Ensure no hazardous classifies conflict with HS code. |
| ✅ Commercial Invoice | ✔️ | Clear description: "Dispersant for Papermaking" or "Crystallization Agent." Avoid generic "Chemical." |
| ✅ Certificate of Origin | ✔️ | Proof of Chinese origin to apply Section 301/122 rules. |
✅ 2. Declaration Strategy (Key Mantra)
🔥 "Composition Dictates Chapter: Starch goes to 35, Synthetic goes to 38. Name it Right, Tax Light!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Product is Starch-based or for Paper | 3505.10.00.15 or .20 |
Misdeclare as 3824... → Higher Tax (35%+) |
| Product is Synthetic for Crystallization | 3824.99.11.00 |
Misdeclare as 3505... → Smuggling Risk |
| Product is Polymer/Primary Shape | 3910.00.00.00 |
Generic "Chemical Additive" → Customs Detention |
| Heavy Bulk Shipment (High Weight) | Prefer 3505 (Specific Duty) |
Use 3824 (Ad Valorem) → Unnecessary Cost |
✅ 3. Special Circumstances Handling
| Situation | Handling Advice |
|---|---|
| OEM/Contract Manufacturing | Provide original formulation from client. Do not alter chemical description. |
| Blended Products | If >50% is starch, argue for Chapter 35. If <50%, Chapter 38 is safer. |
| Customs Audit | Be ready to provide lab test results proving "Modified Starch" status for Chapter 35. |
| Section 122 Impact | All codes listed here are subject to the extra 10%. Factor this into FOB pricing. |
🌍 V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Est. Tariff (China Origin) | Certification Required | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3505.10.00.15 / 3824.99.11.00 |
17.5% + 0.7¢/kg OR 35% | None specific | High Surtax Environment. Chapter 35 is cost-effective. |
| 🇨🇳 China | 3505.10.00.15 / 3824.99.11.00 |
5-13% | None | No Section 301/122. Standard MFN rates apply. |
| 🇪🇺 EU | 3505.10 / 3824.99 |
6-12% | REACH Registration | REACH compliance is mandatory for chemicals. |
| 🇦🇺 Australia | 3505.10 / 3824.99 |
5% | AICIS Registration | Australian Industrial Chemicals Introduction Scheme. |
| 🇯🇵 Japan | 3505.10 / 3824.99 |
6-8% | FSC (if pesticide) | Generally lower non-tariff barriers for industrial chemicals. |
📌 Conclusion:
- USA is the most challenging market due to Section 301 (25%) + Section 122 (10%).
- Chapter 35 (3505.10) offers the lowest effective tariff for paper-related dispersants in the US market due to the specific duty model and lower ad valorem surtax.
- Chapter 38 is unavoidable for non-starch, crystallization-focused dispersants.
📌 VI. Common Errors & Pitfall Guide (Blood & Tears Lessons)
❌ Error 1: Declaring a starch-based paper dispersant as 3824.99.11.00
👉 Consequence: Paying 35% tax instead of 17.5% + 0.7¢/kg. Overpaying by ~17.5%+.
❌ Error 2: Declaring a synthetic crystallization agent as 3505.10.00.15
👉 Consequence: Customs Penalty. Misclassification leads to fines, retroactive duties, and potential blacklisting.
❌ Error 3: Ignoring Section 122 Clause (10%) in cost calculation
👉 Consequence: Profit margin erosion. Many importers forget this additional 10% on top of Section 301.
❌ Error 4: Vague Description "Chemical Dispersant"
👉 Consequence: Customs Detention. CBP will request extensive documentation to determine the correct chapter, delaying shipment by weeks.
✅ Correct Approach:
For Paper Dispersants:
"Modified Starch Dispersant, for Paper Recycling, HS 3505.10.00.15, Contains 80% Modified Starch, 20% Water."For Crystallization Dispersants:
"Synthetic Crystallization Agent, Chemical Preparation, HS 3824.99.11.00, Not Starch-Based."
🎯 VII. Conclusion: Professional Declaration, Save Money, Ensure Speed!
🎯 Remember the Mantra:
🔹 "Starch is King for Paper (Ch 35), Synthetics belong in Chemical (Ch 38)."
🔹 "Section 122 adds 10%, Don't let your margin sink."
🔹 "Weight matters! If heavy, 3505 is your friend (Specific Duty)."
📌 Pro Tip:
If your product is a blended dispersant, analyze the primary function and major component. If it can reasonably be classified as 3505, use it to save costs. If it is purely synthetic, use 3824.99.11.00.
Apply for an Advance Ruling from US Customs if the classification is ambiguous.
📣 Immediate Action:
📞 Consult a licensed customs broker with your Technical Data Sheet.
🚀 Optimize for HS 3505 if possible, otherwise prepare for 35%+ effective tariff under Chapter 38.
💼 Your bottom line depends on this 8-digit code!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every cent counts in the trade war era!
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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) — 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.