铸造型砂增白剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3810100000 | 40.0% | CN | US | Official Doc |
| 3810905000 | 40.0% | CN | US | Official Doc |
| 3809921000 | 41.5% | CN | US | Official Doc |
| 3824100000 | 41.0% | CN | US | Official Doc |
| 3809925000 | 41.0% | CN | US | Official Doc |
AI Analysis
🧪 Mould Sand Brightener / Whitening Agent for Casting
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Full Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What Exactly is "Mould Sand Brightener"?
Mould Sand Brightener (also referred to as Casting Sand Whitener or Industrial Chemical Preparation) is a specialized chemical additive used in the foundry industry. Its primary function is to improve the whiteness, surface finish, and release properties of moulding sands (silica sand) used in metal casting.
In international trade, it is classified as a Chemical Product/Preparation, not a raw material like pure silica sand. The classification depends heavily on its specific formulation and intended auxiliary function: * Surface Treatment Agents: If the chemical acts similarly to pickling solutions or rust inhibitors applied to metal surfaces during preparation. * Foundry Auxiliaries: If it is specifically designed to treat the moulding sand or protect industrial molds. * Other Chemical Preparations: If it falls under general industrial chemical mixtures or binding agents.
⚠️ Key Distinction Point:
- If the product is primarily a rust inhibitor or surface pickling agent applied to the metal or mold surface → HS 3810
- If it is a specialty foundry chemical for sand preparation or mold protection → HS 3809 or HS 3824
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Tax Rate (Total) |
|---|---|---|---|
3810.10.00.00 |
Metal surface treatment agents (e.g., rust inhibitors, pickling preparations) | Chemical liquids/pastes applied to metal surfaces; properties consistent with acid washing agents. | 40.0% |
3810.90.50.00 |
Other chemical preparations for metal surface treatment | Auxiliary preparations; inferred as chemical liquids for surface treatment. | 40.0% |
3809.92.10.00 |
Chemical preparations for finishing, bleaching, washing, cleaning, etc., in the printing or other industries | Industrial finishing agents; specific to casting industry protective treatment. | 41.5% |
3824.10.00.00 |
Modifying preparations for casting moulds | Chemical preparations for moulds; compatible with binding agent attributes. | 41.0% |
3809.92.50.00 |
Other preparations for similar purposes in industrial processing | Protection of industrial molds (casting sand); falls under "other products and preparations." | 41.0% |
🔍 Key Reminder:
- HS 3810 applies if the product functions as a surface treatment/rust inhibitor for the metal or mold. - HS 3809 applies if the product is specifically an industrial finishing/bleaching agent for the sand or casting process. - HS 3824 applies if the product is treated as a mould modifying agent or binding auxiliary.
💰 III. 2026 Latest Tariff Rate Detailed Explanation (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: From November 10, 2025 (including subsequent imports)
🎯 1. 3810.10.00.00 & 3810.90.50.00 —— Metal Surface Treatment Agents / Other Chemical Preparations
| Item | Content |
|---|---|
| Base Duty Rate | 5.0% (ad valorem) |
| USITC Surtax | +25.0% (From USITC Footnote related to Section 301 tariffs) |
| 122 Clause Tariff | +10.0% (Specific US trade regulation surcharge) |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF Value × 40% |
| De Minimis Exemption | ❌ Not Applicable (High risk of seizure if undervalued or misdeclared) |
| Legal Basis Path | Section 301 → 122 Clause → USITC:3810.10.00.00 / 3810.90.50.00 |
📌 Explanation:
- The 25% is the standard Section 301 tariff on most Chinese chemical products. - The 10% is an additional surcharge under specific US trade clauses (122). - Base 5% is the standard MFN (Most Favored Nation) duty. - Total 40% is a significant cost factor for chemical imports.
🎯 2. 3809.92.10.00 —— Chemical Preparations for Industrial Finishing
| Item | Content |
|---|---|
| Base Duty Rate | 6.5% (ad valorem) |
| USITC Surtax | +25.0% |
| 122 Clause Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | Section 301 → 122 Clause → USITC:3809.92.10.00 |
📌 Note:
- Slightly higher base rate (6.5%) due to specific industrial chemical classification. - Surtaxes remain constant at 35% (25+10).
🎯 3. 3824.10.00.00 & 3809.92.50.00 —— Mould Modifications / Other Industrial Preparations
| Item | Content |
|---|---|
| Base Duty Rate | 6.0% (ad valorem) |
| USITC Surtax | +25.0% |
| 122 Clause Tariff | +10.0% |
| Total Tax Rate | 41.0% |
| Tax Calculation | CIF Value × 41.0% |
| De Minimis Exemption | ❌ Not Applicable |
| Legal Basis Path | Section 301 → 122 Clause → USITC:3824.10.00.00 / 3809.92.50.00 |
📌 Note:
- Base rate is 6.0%. - Total tax is 41.0%. - Classification depends on whether the product is viewed as a "mould modifier" (3824) or "industrial finisher" (3809).
🛠️ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Avoidance Guide)
✅ 1. Required Documentation Checklist (Non-Negotiable)
| Document | Mandatory | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must include chemical composition, CAS numbers, pH level, and physical state (liquid/paste). |
| ✅ Safety Data Sheet (SDS) | ✔️ | Critical for chemicals. Must show no hazardous material violations under US DOT/FEMA regulations. |
| ✅ Product Photos (Label & Container) | ✔️ | Clear view of label, warning symbols, and net weight. |
| ✅ Commercial Invoice | ✔️ | Must accurately describe product as "Chemical Preparation for Casting Sand" or "Metal Surface Treatment Agent." |
| ✅ Packing List | ✔️ | Detailing gross/net weight, dimensions, and number of containers. |
| ✅ Certificate of Origin (CO) | ✔️ | To confirm Chinese origin (triggers the 25%+10% surtaxes). |
| ✅ Test Report (Optional but Recommended) | ✔️ | Third-party lab report confirming chemical identity to support HS Code selection. |
✅ 2. Declaration Tips (Key Mantras)
🔥 "Be Specific, Describe Function, Avoid Generic Terms!"
| Scenario | Correct Declaration | Wrong Declaration | Consequence |
|---|---|---|---|
| Chemical for Sand Whitening | Chemical Preparation for Mould Sand Treatment, Liquid |
"Whitener" or "Sand Additive" | Vague → Customs May Assign Higher Rate or Hold |
| Rust-Inhibiting Surface Agent | Metal Surface Treatment Agent, Rust Inhibitor, Liquid |
"Cleaning Chemical" | Misclassification → Potential Penalty |
| Industrial Mould Paste | Chemical Preparation for Casting Moulds, Paste |
"Glue" or "Binding Agent" | Incorrect HS → Rate Diff (6% vs 5% base) |
| Bulk Liquid in Drum | Liquid Chemical, Non-Hazardous, 200kg Drum |
"Chemicals" | Hazardous Misdeclaration → Ship Seized! |
✅ 3. Special Situation Handling
| Situation | Handling Advice |
|---|---|
| Hazardous vs. Non-Hazardous | If the brightener contains strong acids/bases, it may be classified as Hazardous. Requires DOT shipping papers. If non-hazardous, ensure SDS confirms this. |
| OEM/Private Label | If branded for a specific foundry, provide the End-User Specification to justify the "Industrial Use" classification. |
| Mixed Shipments | If mixing with other chemicals, declare each HS Code separately. Do not lump all under one code. |
| EPA Registration | If the product claims "pesticidal" or "biocidal" properties (e.g., antimicrobial sand), it may require EPA registration. Pure whitening agents usually do not. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Duty Rate | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 United States | 3810.10.00.00 / 3809.92.10.00 |
40.0% - 41.5% | SDS, DOT (if hazardous) | Highest cost due to Section 301 + 122 Clause. |
| 🇨🇳 China | 3810.10.00.00 |
~5-6% | None (Domestic) | Low tax, easy clearance. |
| 🇪🇺 European Union | 3824.10.00.00 |
0-6% | REACH Registration | REACH compliance is critical for chemicals. |
| 🇲🇽 Mexico | 3810.10.00.00 |
0-5% (USMCA) | NOM Standards | Excellent alternative if shipped from Mexico to US. |
| 🇻🇳 Vietnam | 3824.10.00.00 |
0-10% | TCVN Standards | Potential for lower tariffs if manufactured locally. |
📌 Conclusion:
- The US market is the most expensive due to 40%+ total tariffs. - EU requires REACH compliance, which is a high barrier to entry. - Mexico/Vietnam offer supply chain alternatives to mitigate US tariffs.
📌 VI. Common Errors & Pitfall Guide (Blood-Tears Lessons)
❌ Error 1: Declaring as "Sand" or "Silica"
👉 Result: Customs detects chemical properties → Retrospective Duty Adjustment + Penalties!
❌ Error 2: Ignoring SDS/Hazard Classification
👉 Result: Ship seized or returned at port if classified as non-hazardous but actually hazardous.
❌ Error 3: Using Generic Terms like "Cleaning Agent"
👉 Result: Incorrect HS Code assignment → Higher Base Rate (6.5% vs 5%) or Audit.
❌ Error 4: Underestimating Total Tax (40%+)
👉 Result: Profit margin wiped out. Must include tax in FOB/CIF pricing strategy.
✅ Correct Approach:
"Liquid Chemical Preparation for Foundry Mould Sand Whitening, Non-Hazardous, 200L Drum, SDS Provided, HS 3810.10.00.00"
🎯 VII. Conclusion: Professional Declaration, Save Cost & Time!
🎯 Remember the Mantra:
🔹 "Chemicals Need SDS, Sand Needs Function, Tariffs Are High, Declare With Caution!"
🔹 "HS Code Determines Tax, 40% is the Reality, Don't Guess, Get Pre-Ruling!"
📌 Pro Tip:
If your product can be modified to be classified under a lower base rate (e.g., distinguishing between surface treatment vs. mould modifier), consult a customs broker for an Advance Ruling.
Consider supply chain diversification (e.g., Mexico/ASEAN) to bypass US surtaxes if volume is high.
📣 Take Action Now:
📞 Contact a Licensed Customs Broker + Provide SDS + Apply for HS Code Pre-Ruling
🚀 Ensure Your Mould Sand Brightener Clears Smoothly, Pays Correct Tax, and Reaches Foundries On Time!
✨ Professional Clearance Starts with Accurate Classification!
💼 Your Every Dollar of Duty is Worth Calculating Precisely!
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.