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🌿 Rosin Manganese (Manganese Resinate)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: Do You Really Understand “Rosin Manganese”?
Rosin Manganese, also known as Manganese Resinate, is a metallic soap produced by the reaction of Rosin (Colophony) with Manganese Oxide or Manganese Carbonate. It is primarily used in the manufacturing of paints, varnishes, and drying agents (driers) to accelerate the oxidation and hardening of oil-based coatings.
In international trade, it is strictly classified under Chemical Products related to organic derivatives, specifically metal salts of organic acids (Rosin being a complex mixture of organic acids).
⚠️ Key Distinction Point:
- If it is a pure chemical compound (Manganese Salt of Rosin Acid) used as a drier additive for paints → Classified under 3824 (Prepared Binders for Foundry Moulds; Chemical Products...).
- Note: It is NOT classified as a simple metal (Chapter 75) or simple inorganic salt (Chapter 28/29) because its primary function and chemical nature are tied to the organic rosin acid backbone.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Cross-Reference)
| HS Code | Product Description | Application Scenario | Key Chemical Feature |
|---|---|---|---|
3824.99.90.00 |
Other chemical products and preparations, not elsewhere specified or included | Rosin Manganese (Manganese Resinate) used as paint drier, rubber additive, or plasticizer | Organic salt of rosin acid |
3824.99.15.00 |
Other (specific to some national subdivisions) | May apply in countries with more granular subdivisions | Same as above |
3205.20.00.00 |
Synthetic organic pigments | ❌ Incorrect – Rosin Manganese is not a pigment | N/A |
2804.93.00.00 |
Manganese in elemental form | ❌ Incorrect – Not elemental manganese | N/A |
🔍 Key Reminder:
- Rosin Manganese is almost universally classified under 3824.99.90.00 (or its national 10-digit equivalent) because it is a prepared chemical product used as a drying agent or modifier.
- Do NOT classify it under Chapter 28 (Inorganic Chemicals) or Chapter 75 (Manganese), as it is an organic derivative.
- If the product is uncured rosin (not reacted with manganese), it would fall under 1302.19.90.00 (Vegetable Saps and Extracts), but Rosin Manganese is a chemical reaction product, hence 3824.
💰 III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: From November 10, 2025 (including subsequent imports)
🎯 1. 3824.99.90.00 —— Other Chemical Products (Rosin Manganese)
| Item | Content |
|---|---|
| Base Tariff Rate | 2.5% (ad valorem) |
| USITC Additional Tariff (Section 301) | +7.5% (Footnote 9903.88.01 applies to certain chemical preparations) |
| IEEPA Additional Tariff | +10% (针对中国/香港产品，自2025年11月10日起) |
| Total Tariff Rate | 20% |
| Tax Calculation | CIF Value × 20% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Pathway | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3824.99.90.00 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- The base tariff for most prepared chemical products is low (2.5%).
- However, due to Section 301 and IEEPA tariffs on Chinese goods, the effective rate jumps to 20%.
- No de minimis exemption applies for chemicals of this nature from China.
🛠️ IV. Customs Clearance Practical Suggestions (Battle-Tested Pitfall Guide)
✅ 1. Document Checklist (Indispensable)
| Document | Required | Notes |
|---|---|---|
| ✅ Certificate of Analysis (COA) | ✔️ | Must specify Manganese Content and Rosin Acid Content to prove it is Rosin Manganese, not raw rosin. |
| ✅ Formula/Composition Statement | ✔️ | Declare as “Manganese Salt of Rosin Acid” to avoid misclassification as inorganic salt. |
| ✅ Safety Data Sheet (SDS) | ✔️ | Classify as Non-Hazardous or Category 4 depending on concentration; ensure compliance with OSHA/GHS. |
| ✅ Commercial Invoice | ✔️ | Clear description: “Rosin Manganese, Manganese Resinate, CAS No. 61790-10-9 (if applicable), for use as paint drier.” |
| ✅ Packaging List | ✔️ | Specify net/gross weight; ensure packaging is sealed to prevent moisture absorption (Rosin Manganese is hygroscopic). |
✅ 2. Declaration Tips (Key Mantra)
🔥 “Don’t Call It ‘Manganese’, Call It ‘Prepared Chemical’!”
| Scenario | Correct Declaration | Incorrect Declaration |
|---|---|---|
| Rosin Manganese | 3824.99.90.00 – “Prepared Chemical Product, Manganese Rosinate” |
Misdeclare as 2804.93 (Manganese Metal) → High Risk of Audit |
| Raw Rosin | 1302.19.90.00 – “Vegetable Sap, Colophony” |
Misdeclare as 3824 → Tax Underpayment |
| Manganese Dioxide (Pigment) | 2820.00.00.00 – “Manganese Oxide” |
Misdeclare as 3824 → Classification Error |
📌 Critical Advice:
- Always include CAS Number (if available) or technical formula in the declaration.
- Declare exact function: “Used as drying agent in alkyd paints.” This supports classification under 3824 (Prepared Chemicals) rather than raw materials.
✅ 3. Special Cases Handling
| Scenario | Handling Suggestion |
|---|---|
| Mixed with Other Metals | If blended with Cobalt, Zirconium, etc., declare as “Mixed Metal Driers” under 3824.99.90.00. |
| Liquid vs. Solid | Rosin Manganese is often a solid or paste. Ensure SDS reflects physical state. |
| Origin Diversification | If sourced from Vietnam or Thailand, IEEPA tariffs may be reduced/eliminated. Verify origin certificate. |
🌍 V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirement | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3824.99.90.00 |
20% (2.5% base + 7.5% 301 + 10% IEEPA) | TSCA Compliance | High tariff due to trade war policies. |
| 🇨🇳 China | 3824.99.90.00 |
5.0% | None | No surcharges. |
| 🇪🇺 EU | 3824.99.99 |
0–6.5% | REACH Registration | REACH compliance is critical. |
| 🇯🇵 Japan | 3824.99.00 |
3.0–5.0% | JIS Standards | Low tariff, but strict quality control. |
| 🇮🇳 India | 3824.99.00 |
7.5–10% | BIS Certification | Bureaucratic delays possible. |
📌 Conclusion:
- USA is the most expensive market due to 20% effective tariff.
- EU & Japan are more cost-effective but require chemical registrations (REACH, JIS).
- Consider origin diversification (e.g., Southeast Asia) to mitigate US tariffs.
📌 VI. Common Errors & Pitfalls (Blood-Tears Lessons)
❌ Error 1: Declaring as “Manganese Oxide” (2820.00)
👉 Consequence: Misclassification → Customs may assess higher tariffs or penalties because Rosin Manganese is an organic salt, not an inorganic oxide.
❌ Error 2: Omitting “Prepared Chemical” in description
👉 Consequence: Customs may question the product’s nature → Delay in release for further inspection.
❌ Error 3: Not providing COA for Manganese Content
👉 Consequence: Customs may doubt the product is indeed Rosin Manganese → Audit triggered.
❌ Error 4: Claiming De Minimis exemption
👉 Consequence: Denied for chemicals from China → Unexpected tax bills.
✅ Correct Declaration Example:
“Rosin Manganese (Manganese Resinate), CAS 61790-10-9, Chemical Grade, Used as Drying Agent in Paints, HS Code 3824.99.90.00”
🎯 VII. Conclusion: Precision Classification Saves Cost!
🎯 Remember the Mantra:
🔹 “Not Metal, Not Oxide, It’s a Prepared Chemical!”
🔹 “Rosin Manganese → 3824.99.90.00, Tariff 20% in USA!”
🔹 “Always declare Function: ‘Paint Drier’!”
📌 Pro Tip:
- If you are importing into the USA, consider HS Code Pre-Ruling from USCBP to avoid disputes.
- For EU imports, ensure REACH Registration is complete before shipment.
- Documentation is Key: Always attach COA and SDS with your customs documents.
📣 Immediate Action:
📞 Contact a customs broker + Provide Product Technical Sheet + Verify HS Code Pre-Ruling
🚀 Ensure compliant declaration, avoid delays, and optimize costs!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every percentage point of tariff counts!
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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.