海藻酸钠
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 1302390090 | 20.7% | CN | US | Official Doc |
| 1302390010 | 20.7% | CN | US | Official Doc |
| 2938900000 | 13.7% | CN | US | Official Doc |
| 3913902090 | 40.8% | CN | US | Official Doc |
| 1302390090 | 20.7% | CN | US | Official Doc |
AI Analysis
🌿 Sodium Alginate Powder (海藻酸钠粉末) & Pharmaceutical Grade Alginate (药用级海藻酸)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What Exactly is "Alginate"?
Sodium Alginate and Pharmaceutical Grade Alginate are complex polysaccharides derived from brown seaweed. In international trade, their classification hinges on their chemical nature (thickener vs. derivative) and end-use (industrial vs. pharmaceutical). Misclassification can lead to drastic tariff differences (from 13.7% to 40.8%).
There are two main classification paths based on the provided data:
1. Plant-Derived Thickeners/Mucilages (1302.39):
Classified under Chapter 13 ("Extracts of Juices, Roots, Fruits..."). This view treats alginate as a natural plant exudate or thickening agent.
Key Indicator:* Industrial grade, general thickeners, or defined strictly as "plant mucilage."
2. Sugar Glycosides/Polysaccharide Derivatives (2938.90 / 3913.90):
Classified under Chapter 29 (Organic Chemicals) or Chapter 39 (Plastics). This view treats alginate as a chemically defined derivative.
Key Indicator:* High purity, specific chemical derivative status, or pharmaceutical grade polysaccharides.
⚠️ Critical Distinction Point:
- If declared as a "Plant-source thickener/mucilage" → Falls under 1302.39.00.90 / 1302.39.00.10.
- If declared as a "Natural Glycoside Derivative" → Falls under 2938.90.00.00.
- If declared as "Pharmaceutical Polysaccharide Derivative" → Falls under 3913.90.20.90.
📦 II. HS Code Classification Details (Authoritative 2026 Tariff Mapping)
| HS Code | Product Description | Applicable Scenario | Tax Category Basis |
|---|---|---|---|
1302.39.00.90 |
Other Plant-source Thickeners/Mucilages (e.g., Alginate Powder) | Industrial alginate, food-grade thickeners, general plant extracts | Plant-source Mucilage |
1302.39.00.10 |
Specific Plant-source Thickeners (Alginate Category) | Dedicated plant-thickener items under 1302.39 | Specific Plant Thickeners |
2938.90.00.00 |
Other Natural Glycosides & Derivatives | Alginate defined chemically as a natural glycoside derivative | Organic Chemicals (Glycosides) |
3913.90.20.90 |
Polysaccharide Derivatives (Pharmaceutical Grade) | Pharmaceutical-grade Alginate, high-purity polysaccharides | Plastic Materials/Polymers |
🔍 Key Reminder:
- Industrial/General Alginate: Often classified under 1302.39 due to its natural plant origin, but beware of higher duties.
- Chemically Defined Derivatives: May fall under 2938.90 if interpreted as a glycoside derivative.
- Pharmaceutical Grade: High-purity alginate used in medicine may be classified under 3913.90 as a polysaccharide derivative, attracting the highest duties.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: Ongoing (Includes Section 301 & Section 122 tariffs)
🎯 1. 1302.39.00.90 & 1302.39.00.10 — Plant-source Thickeners
| Item | Content |
|---|---|
| Base Tariff | 3.2% (MFN Rate) |
| Section 301 Surtax | +7.5% (Additional Duty) |
| Section 122 Tariff | +10% (Special Clause 122) |
| Total Tax Rate | 20.7% |
| Tax Calculation | CIF Value × 20.7% |
| De Minimis Exemption | ❌ Not Applicable (Subject to high duties) |
| Legal Basis Path | HTSUS:1302.39 → Section 301: 7.5% → Section 122: 10% |
📌 Explanation:
- These codes treat alginate as a natural plant extract/thickener.
- While the base duty is low (3.2%), the addition of Section 301 (7.5%) and Section 122 (10%) brings the total to 20.7%.
- Note: Section 122 tariffs are often applied to specific strategic or sensitive imports, adding significant cost.
🎯 2. 2938.90.00.00 — Natural Glycoside Derivatives
| Item | Content |
|---|---|
| Base Tariff | 3.7% (MFN Rate) |
| Section 301 Surtax | 0.0% (No Additional Duty) |
| Section 122 Tariff | +10% (Special Clause 122) |
| Total Tax Rate | 13.7% |
| Tax Calculation | CIF Value × 13.7% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | HTSUS:2938.90 → Section 301: 0% → Section 122: 10% |
📌 Note:
- This code offers the lowest total tax burden (13.7%) among the options.
- It avoids the Section 301 surtax (7.5%), likely because it is classified as a specific organic chemical derivative rather than a general plant extract.
- Strategy: If your product qualifies as a "Natural Glycoside Derivative," this is the most cost-effective classification.
🎯 3. 3913.90.20.90 — Pharmaceutical Polysaccharide Derivatives
| Item | Content |
|---|---|
| Base Tariff | 5.8% (MFN Rate) |
| Section 301 Surtax | +25.0% (High Additional Duty) |
| Section 122 Tariff | +10% (Special Clause 122) |
| Total Tax Rate | 40.8% |
| Tax Calculation | CIF Value × 40.8% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | HTSUS:3913.90 → Section 301: 25% → Section 122: 10% |
📌 Warning:
- This code attracts the highest tax rate (40.8%).
- It is subject to the full 25% Section 301 surtax due to its classification under Chapter 39 (Polymers/Plastics) or specific pharmaceutical chemical rules.
- Avoid this classification unless absolutely necessary for regulatory reasons. The cost impact is massive.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Preparation Checklist (Non-negotiable)
| Material | Required | Explanation |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must detail source (brown seaweed), purity, solubility, and application (food, pharma, industrial). |
| ✅ Chemical Structure Diagram | ✔️ | Crucial for proving if it falls under 2938 (Glycoside) vs. 1302 (Mucilage). |
| ✅ MSDS/SDS | ✔️ | Standard safety data sheet; confirms non-hazardous status. |
| ✅ Certificate of Origin (CO) | ✔️ | Proves Chinese origin (triggers Section 301/122). |
| ✅ Commercial Invoice | ✔️ | Must clearly state "Sodium Alginate Powder" or "Pharmaceutical Grade Alginate." |
| ✅ Usage Declaration | ✔️ | Explicitly state end-use (e.g., "For use as a thickener in food products" vs. "For pharmaceutical tablet coating"). |
✅ 2. Classification Strategy (Key Maneuvers)
🔥 “Glycoside Route Saves Money, Mucilage Route is Common, Pharma Route is Expensive!”
| Scenario | Recommended HS Code | Reasoning |
|---|---|---|
| Standard Industrial Alginate | 1302.39.00.90 |
Safe default for plant extracts. Tax: 20.7%. |
| Chemically Defined Alginate Derivative | 2938.90.00.00 |
Best Cost Option. Tax: 13.7%. Requires strong chemical justification. |
| High-Purity Pharmaceutical Grade | 3913.90.20.90 |
Avoid if possible. Tax: 40.8%. Only use if regulatory requirements force this classification. |
✅ 3. Special Handling Cases
| Situation | Handling Advice |
|---|---|
| Mix of Grades | Separate industrial and pharmaceutical grades in shipment. Do not mix if classification differs. |
| Bulk vs. Packaged | Bulk shipment may have different documentation needs; ensure invoice matches physical form. |
| Dispute with CBP | If classified under 1302 but you claim 2938, provide chemical analysis reports showing it fits "Glycoside Derivative" criteria. |
| Section 122 Applicability | Verify if Section 122 still applies to your specific alginate product in the current year, as these clauses can change. |
🌍 V. Global Market Comparison (2026 Overview)
| Country/Region | Recommended HS Code | Estimated Duty | Notes |
|---|---|---|---|
| 🇺🇸 USA | 2938.90.00.00 |
13.7% | Lowest duty among US options. Avoid 3913 (40.8%). |
| 🇪🇺 EU | 1302.39 |
~5-8% | No Section 301/122 equivalent. Standard MFN rates apply. |
| 🇨🇳 China (Import) | 1302.39 |
~5% | Generally low duties for plant extracts. |
| 🇬🇧 UK | 1302.39 |
~5-8% | Post-Brexit tariff schedule similar to EU for this category. |
📌 Conclusion:
- USA: Classification choice is critical due to Section 122 and Section 301.2938.90.00.00is the strategic winner.
- Other Markets: Less impacted by US-specific surtaxes; standard MFN rates apply.
📌 VI. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Classifying all alginate under 3913.90
👉 Consequence: 40.8% Tax Rate → Massive cost increase.
👉 Fix: Prove it is not a "Plastic/Polysaccharide Derivative" in the Chapter 39 sense, but a "Glycoside" (2938) or "Mucilage" (1302).
❌ Error 2: Ignoring Section 122 Tariff
👉 Consequence: Underpaying by 10%.
👉 Fix: Always include Section 122 (10%) in cost calculations for US imports from China, regardless of HS Code.
❌ Error 3: Mixing Pharmaceutical and Industrial Grades
👉 Consequence: Customs may audit the whole shipment and apply the highest duty rate to all units.
👉 Fix: Ship separately or provide clear segregation in documentation.
🎯 VII. Conclusion: Precision Classification Saves Money!
🎯 Remember the Strategy:
🔹 “Check Chemistry First: Glycoside (2938) = 13.7% | Mucilage (1302) = 20.7% | Pharma (3913) = 40.8%!”
🔹 “Section 122 is Always 10%: Don’t Forget It!”
🔹 “Avoid 3913 Unless Required: It Will Kill Your Margin!”
📌 Pro Tip:
If you have the flexibility to define your product’s chemical nature, lean towards the 2938.90.00.00 classification (Natural Glycoside Derivative) for US imports. It saves you 7% in duties compared to the plant mucilage classification.
Ensure your Chemical Analysis Report explicitly supports the "Glycoside Derivative" definition to withstand CBP scrutiny.
📣 Immediate Action:
📞 Consult with a Customs Broker or Trade Lawyer to review your Chemical Structure and Intended Use.
🚀 Optimize your HS Code to 13.7% instead of 20.7% or 40.8%.
✨ Professional Classification, Significant Savings!
💼 Every Percent 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) — 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.