Casting Corrosion Inhibitor (Vanadium based)
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824993600 | 24.0% | CN | US | Official Doc |
| 3824999397 | 40.0% | CN | US | Official Doc |
| 2841901000 | 40.5% | CN | US | Official Doc |
| 2826199000 | 38.9% | CN | US | Official Doc |
| 2841905000 | 38.7% | CN | US | Official Doc |
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AI Analysis
π Casting Corrosion Inhibitor (Vanadium-based) β The Hidden Cost of "Chemical Ambiguity"
π HS Code Classification & Customs Clearance Guide | 2026 Latest Tariff Analysis | Critical Warning for Vanadium Products
π I. Product Definition: What Exactly Are You Shipping?
Casting Corrosion Inhibitors (Vanadium-based) are specialized chemical additives used in the metal casting industry. Their primary function is to protect molds, cores, or the metal surface itself from oxidation and corrosion during high-temperature processing.
However, in international trade, vanadium compounds are highly regulated. Depending on their chemical nature (is it a salt? a complex mixture? a fluoride?), they fall into vastly different HS Code categories with drastically different tax implications.
β οΈ Key Distinction for Customs:
- Is it a chemical mixture/additive for bonding? β Chapter 38
- Is it a specific metal salt derivative (Vanadate)? β Chapter 28
- Is it a fluoride compound? β Chapter 28
π¦ II. HS Code Classification Matrix (Strictly Based on Provided Data)
| HS Code | Product Description (Summary) | Category Logic | Total Tax Rate |
|---|---|---|---|
3824.99.36.00 |
Vanadium-based casting corrosion inhibitor; matches the category of modified binders/chemical products for casting molds or cores. | Chemical Preparations (Chapter 38) | 24.0% |
3824.99.93.97 |
Vanadium-based casting corrosion inhibitor; classified as "Other chemical products and preparations" not elsewhere specified in the chemical industry. | Miscellaneous Chemicals (Chapter 38) | 40.0% |
2841.90.10.00 |
Vanadium-based casting plasticizer; meets vanadate material requirements; classified as derivatives of oxygenated metal salts. | Vanadium Salts (Chapter 28) | 40.5% |
2826.19.90.00 |
Vanadium-based casting plasticizer; falls under fluorides/complex salts category, specifically other fluorides not explicitly listed. | Fluoride Compounds (Chapter 28) | 38.9% |
2841.90.50.00 |
Vanadium-based casting plasticizer; classified under metal salt derivatives related to oxygenated metal salts. | Other Metal Salts (Chapter 28) | 38.7% |
π Critical Insight:
- The difference between 24.0% and 40.5% is 16.5% β a massive margin that can erase profit margins.
- Misclassifying a Vanadate (2841) as a General Chemical Mixture (3824) is a major customs violation risk, but misclassifying a Mixture (3824) as a Pure Salt (2841) might lead to overpaying taxes.
- Accuracy depends on the exact chemical formula and primary function.
π° III. 2026 Latest Tariff Rate Breakdown (Detailed Analysis)
β Applicable Country: USA (US)
β Origin: China (CN)
β Effective Time: Current rates include Section 301 and Section 122 tariffs.
π― 1. 3824.99.36.00 β The "Optimal" Classification for Mixture-Based Inhibitors
Description: Vanadium-based casting corrosion inhibitor, matching the category of modified binders/chemical products for casting molds or cores.
| Item | Details |
|---|---|
| Base Tariff | 6.5% |
| Section 301 Surcharge | 7.5% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 24.0% |
| Calculation Basis | CIF Value Γ 24% |
| De Minimis Eligibility | β Not Eligible (High tariff rates typically exempt from de minimis for China-origin goods) |
| Legal Path | USITC:3824.99.36.00 β Section 301: 7.5% + Section 122: 10% |
π Why this rate?
- This is the lowest tax burden in the dataset.
- Applicable if the product is primarily a mixture/formulation (binder/adhesive modifier) where vanadium is an additive, not the primary reactive salt.
- Strategy: If your product is a slurry, paste, or mixture designed specifically for mold coating, argue for this classification.
π― 2. 3824.99.93.97 β The "Miscellaneous Chemical" Trap
Description: Vanadium-based casting corrosion inhibitor; other chemical products and preparations not elsewhere specified.
| Item | Details |
|---|---|
| Base Tariff | 5.0% |
| Section 301 Surcharge | 25.0% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 40.0% |
| Calculation Basis | CIF Value Γ 40% |
| De Minimis Eligibility | β Not Eligible |
| Legal Path | USITC:3824.99.93.97 β Section 301: 25.0% + Section 122: 10% |
π Why this rate?
- High Section 301 rate (25%) because itβs considered a "general" chemical import without specific functional classification.
- Risk: If you use this code for a product that could be classified as a specific salt (Chapter 28), Customs may reclassify it, leading to penalties.
π― 3. 2841.90.10.00 β The "Vanadate" Premium
Description: Vanadium-based casting plasticizer; meets vanadate material requirements; derivatives of oxygenated metal salts.
| Item | Details |
|---|---|
| Base Tariff | 5.5% |
| Section 301 Surcharge | 25.0% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 40.5% |
| Calculation Basis | CIF Value Γ 40.5% |
| De Minimis Eligibility | β Not Eligible |
| Legal Path | USITC:2841.90.10.00 β Section 301: 25.0% + Section 122: 10% |
π Why this rate?
- Highest rate in the dataset (40.5%).
- Chapter 28 covers "Inorganic Chemicals; Organic or Inorganic Compounds of Precious Metals, of Radioactive Elements, of Rare-Earth Metals or of Radio-Metallic Elements."
- If your product is a pure Vanadate salt (e.g., Ammonium Vanadate) used as a plasticizer, it must go here. The high Section 301 rate applies strictly to inorganic salts from China.
π― 4. 2826.19.90.00 β The "Fluoride" Special Case
Description: Vanadium-based casting plasticizer; falls under fluorides/complex salts, other fluorides or related compounds not explicitly listed.
| Item | Details |
|---|---|
| Base Tariff | 3.9% |
| Section 301 Surcharge | 25.0% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 38.9% |
| Calculation Basis | CIF Value Γ 38.9% |
| De Minimis Eligibility | β Not Eligible |
| Legal Path | USITC:2826.19.90.00 β Section 301: 25.0% + Section 122: 10% |
π Why this rate?
- Chapter 28 covers "Fluorides."
- If your vanadium compound is complexed with fluorine (e.g., Vanadium Pentafluoride derivatives), it falls under 2826.
- Note: 38.9% is lower than pure Vanadates (40.5%) but higher than the optimal mixture (24.0%).
π― 5. 2841.90.50.00 β The "Other Metal Salt" Category
Description: Vanadium-based casting plasticizer; metal salt derivatives related to oxygenated metal salts.
| Item | Details |
|---|---|
| Base Tariff | 3.7% |
| Section 301 Surcharge | 25.0% |
| Section 122 Tariff | 10% |
| Total Effective Rate | 38.7% |
| Calculation Basis | CIF Value Γ 38.7% |
| De Minimis Eligibility | β Not Eligible |
| Legal Path | USITC:2841.90.50.00 β Section 301: 25.0% + Section 122: 10% |
π Why this rate?
- Similar to 2841.90.10.00 but for "other" metal salts not specifically listed as vanadates.
- Use only if the product is a metal salt derivative but does not strictly meet the "vanadate" definition of 2841.90.10.00.
π οΈ IV. Customs Clearance Practical Advice (Avoiding the 16.5% Trap)
β 1. Documentation Checklist (Non-Negotiable)
| Document | Required | Purpose |
|---|---|---|
| β Formula Sheet / SDS | βοΈ Critical | Proves whether the product is a mixture (Chapter 38) or a pure salt (Chapter 28). |
| β Function Statement | βοΈ | Must explicitly state: "Used as a binder modifier for molds" (supports 3824) vs. "Used as a plasticizing salt" (supports 2841). |
| β Product Photos | βοΈ | Show physical form (powder, liquid, paste). Pastes/mixtures lean towards 3824. |
| β Technical Data Sheet (TDS) | βοΈ | Shows viscosity, binding strength, etc., supporting the "chemical preparation" argument. |
| β Commercial Invoice | βοΈ | Must match HS Code description exactly. Do not use vague terms like "Chemical." Use "Vanadium-based Mold Coating Additive." |
β 2. Declaration Strategy (The "Golden Rule")
π₯ "Mixture = Chapter 38 (Low Tax), Pure Salt = Chapter 28 (High Tax). Prove it's a Mixture!"
| Scenario | Recommended HS Code | Tax Rate | Why? |
|---|---|---|---|
| Product is a slurry/paste for mold coating | 3824.99.36.00 |
24.0% | Itβs a "chemical preparation" for molds. Lowest risk & cost. |
| Product is a bulk powder additive | 3824.99.93.97 |
40.0% | Harder to argue as a "mold-specific" binder. Higher risk of reclassification. |
| Product is pure Ammonium Vanadate | 2841.90.10.00 |
40.5% | Strictly a vanadate salt. No choice here. |
| Product contains Vanadium Fluoride | 2826.19.90.00 |
38.9% | Strictly a fluoride compound. |
π Strategic Tip:
If your product is a formulation (vanadium + water + binders + other chemicals), fight for3824.99.36.00.
- Provide SDS showing multiple ingredients.
- Emphasize the functional use (mold/core modification) rather than the chemical content (vanadium).
- This saves 16.5% in taxes compared to Chapter 28 codes.
β 3. Special Circumstances & Pitfalls
| Pitfall | Consequence | Solution |
|---|---|---|
| Vague Invoice Description ("Vanadium Chemical") | Customs may reclassify to 2841 (40.5%) or 3824.99.93.97 (40%) |
Be specific: "Vanadium-based binder additive for iron casting molds." |
| Claiming De Minimis | Blocked | All these codes have >20% tariffs. No de minimis exemption for China-origin goods. |
| Missing SDS | Delay in clearance, potential audit | Always attach SDS proving composition. |
| Wrong Section 301 Footnote | Penalty | Ensure the correct 301 footnote is cited for Chapter 38 vs. Chapter 28. |
π V. Global Market Comparison (2026)
| Market | Recommended HS Code | Est. Total Tax | Key Requirement |
|---|---|---|---|
| πΊπΈ USA | 3824.99.36.00 (if mixture) |
24.0% | SDS, Formulation Proof |
| πΊπΈ USA | 2841.90.10.00 (if salt) |
40.5% | Pure Salt Certification |
| π¨π³ China | 3824.99.36.00 |
~6-10% | No Section 301/122 |
| πͺπΊ EU | 3824.99.36.00 |
~6.5% | REACH Compliance |
| π¬π§ UK | 3824.99.36.00 |
~6.5% | UKCA Marking |
π Conclusion:
- The USA is the most expensive market due to Section 301 and Section 122 tariffs.
- Chapter 38 (Mixture) is significantly cheaper than Chapter 28 (Salt).
- EU/UK do not have Section 301/122, so the tax burden is much lower (~6.5%).
π VI. Common Errors & How to Avoid Them (Blood Lessons)
β Error 1: Using "Vanadium Salt" on the invoice when it's actually a Mixture.
π Result: Customs may accept 2841 (40.5%) if they think it's pure, but if you declared 3824 and they find it's pure, you face fraud penalties.
β
Fix: Declare honestly based on composition. If it's a mixture, use 3824 and provide formula.
β Error 2: Claiming De Minimis for small shipments.
π Result: Shipment seized. All these HS Codes have high tariffs.
β
Fix: Factor 24-40% tax into your pricing. No de minimis for China.
β Error 3: Ignoring Section 122 Tariff.
π Result: Unexpected 10% charge at customs.
β
Fix: Budget for Base + 301 + 122. Total is always Sum of all three.
π― VII. Conclusion: Smart Classification Saves Profit!
π― Remember the Golden Rule:
πΉ "Mixture = 24% (Win!), Pure Salt = 40.5% (Lose!)."
πΉ "Don't call it 'Vanadium Compound'. Call it 'Mold Binder Additive'."
πΉ "Provide SDS. Prove it's a mixture. Save 16.5%."
π Pro Tip:
If your product is 90% binder + 10% vanadium, INSIST on
3824.99.36.00.
Provide a technical sheet showing the primary function is mold bonding, not chemical reaction of vanadium.
This is your best defense against high tariffs.
π£ Immediate Action:
π Contact your freight forwarder with the exact SDS.
π Request a Pre-Ruling from US Customs (CBP) if shipping large volumes.
π Optimize your label: "Vanadium-based Coating Additive for Casting Molds" β HS3824.99.36.00.
β¨ Precision in Classification = Precision in Profit!
πΌ Don't let ambiguity cost you 16.5%!
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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) 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.