Flame Retardant Formula for Casting
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824999397 | 40.0% | CN | US | Official Doc |
| 3824997000 | 35.0% | CN | US | Official Doc |
| 2835295100 | 39.1% | CN | US | Official Doc |
| 3824995500 | 38.7% | CN | US | Official Doc |
| 3824997000 | 35.0% | CN | US | Official Doc |
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π‘οΈ Flame Retardant Formula for Casting
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
π I. Product Definition and Classification: What Exactly Is This Product?
Flame Retardant Formula for Casting refers to specialized chemical preparations used in the foundry industry. These products are designed to prevent or inhibit the spread of fire in casting molds, cores, or sand mixtures. Depending on the specific chemical composition (e.g., phosphate-based, mixed chemical formulations) and physical form (liquid/powder paste vs. pre-formed sand), the product falls into different Harmonized System (HS) categories.
β οΈ Key Distinction Points:
- If it is a general chemical mixture for industrial use without being a specific "preformed binder" βε½ε ₯ 3824.99.93.97 or 3824.99.70.00.
- If it is specifically identified as phosphate-based chemicals β ε½ε ₯ 2835.29.51.00.
- If it is a preformed sand/binder ready for casting β ε½ε ₯ 3824.99.55.00.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Key Characteristic |
|---|---|---|---|
3824.99.93.97 |
Chemical preparations and products not elsewhere specified (Flame Retardant Formula) | General chemical industry use, chemical mixtures | General Mixture: No specific sub-heading fit, falls under "Other chemical products and preparations." |
3824.99.70.00 |
Mould-core binders for metal casting | Foundry industry, mold/core preparation | Binder/Preparation: Specifically linked to casting mold/core binding agents. |
2835.29.51.00 |
Other Phosphates (Flame Retardant Sand) | Products where phosphate is the main inferred component | Chemical Substance: Inferred as a phosphate-based chemical formula. |
3824.99.55.00 |
Prefabricated binders/prepared forms for casting | Pre-formed sand or industrial products for casting molds | Preformed Form: Ready-to-use sand or binder form. |
3824.99.70.00 |
Mould-core binders for metal casting (Alternative) | Casting-related materials with flame retardant properties | Casting Material: Repeated category for casting-related chemical preparations. |
π Important Reminder:
- The classification heavily depends on whether the product is considered a general chemical preparation (3824.99.93.97), a specific casting binder (3824.99.70.00), a pure chemical compound (2835.29.51.00), or a preformed industrial product (3824.99.55.00). - 3824.99.70.00 appears twice in the data with slightly different summaries but the same code and tax rate, indicating it is a strong candidate for "casting binders."
π° III. 2026 Latest Tariff Rate Details (Including Surcharges and Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Time: Current rates apply (Base + 301 Tariff + Section 122 Tariff)
π― 1. 3824.99.93.97 ββ Chemical Preparations (General Mixture)
| Item | Detail |
|---|---|
| Base Tariff | 5.0% |
| Section 301 Tariff (Add-on) | +25.0% |
| Section 122 Tariff (Add-on) | +10.0% |
| Total Tariff Rate | 40.0% |
| Tax Calculation | CIF Value Γ 40% |
| De Minimis Exemption | β Not Applicable (High tariff threshold) |
| Legal Basis Path | USITC:3824.99.93.97 β Section 301: 25% β Section 122: 10% |
π Explanation:
- This is the highest tax bracket among the options.
- Applies if the product is classified as a generic chemical mixture without specific casting binder designation.
π― 2. 3824.99.70.00 ββ Mould-Core Binders for Metal Casting
| Item | Detail |
|---|---|
| Base Tariff | 0.0% |
| Section 301 Tariff (Add-on) | +25.0% |
| Section 122 Tariff (Add-on) | +10.0% |
| Total Tariff Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis Path | USITC:3824.99.70.00 β Section 301: 25% β Section 122: 10% |
π Explanation:
- Optimal Choice: Zero base tariff makes this the most cost-effective option if the product qualifies as a "mould-core binder."
- Risk: Requires clear documentation proving its use as a binder for casting molds/cores.
π― 3. 2835.29.51.00 ββ Other Phosphates
| Item | Detail |
|---|---|
| Base Tariff | 4.1% |
| Section 301 Tariff (Add-on) | +25.0% |
| Section 122 Tariff (Add-on) | +10.0% |
| Total Tariff Rate | 39.1% |
| Tax Calculation | CIF Value Γ 39.1% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis Path | USITC:2835.29.51.00 β Section 301: 25% β Section 122: 10% |
π Explanation:
- Applies only if the product is primarily phosphate-based.
- Higher than3824.99.70.00but lower than3824.99.93.97.
π― 4. 3824.99.55.00 ββ Prefabricated Binders for Casting
| Item | Detail |
|---|---|
| Base Tariff | 3.7% |
| Section 301 Tariff (Add-on) | +25.0% |
| Section 122 Tariff (Add-on) | +10.0% |
| Total Tariff Rate | 38.7% |
| Tax Calculation | CIF Value Γ 38.7% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis Path | USITC:3824.99.55.00 β Section 301: 25% β Section 122: 10% |
π Explanation:
- Applies if the product is a pre-formed sand or binder.
- Slightly higher than3824.99.70.00due to the 3.7% base tariff.
π οΈ IV. Customs Clearance Practical Advice (Real-World Pitfall Guide)
β 1. Document Checklist (Mandatory)
| Document | Required | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must state: "Flame Retardant," "Casting Binder," and chemical composition (e.g., phosphate content). |
| β Usage Description | βοΈ | Explicitly state: "Used for metal casting molds/cores" to support 3824.99.70.00. |
| β Safety Data Sheet (SDS) | βοΈ | Proves chemical nature and helps customs identify if itβs a "phosphate" (2835.29.51.00). |
| β Commercial Invoice | βοΈ | Clear description: "Flame Retardant Formula for Casting Molds" (Avoid vague terms like "Chemical Mix"). |
| β Packing List | βοΈ | Details net weight, gross weight, and whether itβs pre-formed sand or liquid/powder formula. |
β 2. Declaration Strategy (Key Mantras)
π₯ βDeclare as Binder, Not General Chemical! Prove Casting Use!β
| Scenario | Correct Declaration | Incorrect Practice |
|---|---|---|
| Liquid/Powder Formula | 3824.99.70.00 (Mould-Core Binder) |
Misdeclaring as 3824.99.93.97 β 40% Tax |
| Pre-formed Sand Mix | 3824.99.55.00 (Prefabricated Binder) |
Misdeclaring as 3824.99.93.97 β 40% Tax |
| Phosphate-Dominant | 2835.29.51.00 (Other Phosphates) |
Misdeclaring as general chemical β 40% Tax |
| Ambiguous Product | Provide SDS + Usage Proof to argue for 3824.99.70.00 |
Guessing code β High risk of audit |
β 3. Special Situation Handling
| Situation | Handling Advice |
|---|---|
| OEM Custom Formula | Provide customer order + technical data sheet showing casting application. |
| Mixed Phosphate & Binder | If phosphate is >50%, consider 2835.29.51.00. If itβs a functional binder, argue for 3824.99.70.00. |
| Pre-formed vs. Liquid | Liquid/Powder β Likely 3824.99.70.00. Pre-formed Sand β Likely 3824.99.55.00. |
| High Value Shipment | Apply for Advance Ruling to confirm the HS Code and lock in the 35% rate (3824.99.70.00). |
π V. Global Major Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3824.99.70.00 |
35% (0% Base + 25% + 10%) | None Specific | Best Option: Lowest total tax. |
| π¨π³ China | 3824.99.70.00 |
5% (Standard) | None | Low tariff for domestic trade. |
| πͺπΊ EU | 3824.99.70.00 |
4.7% (Standard) | REACH | No Section 301/122 tariffs. |
| π¬π§ UK | 3824.99.70.00 |
4.7% (Standard) | UK REACH | Post-Brexit rules apply. |
π Conclusion:
- The USA imposes significant additional tariffs (35%) on all Chinese-origin casting chemicals.
-3824.99.70.00is the most cost-effective HS code for US imports (35% total vs. 40% for general chemicals).
π VI. Common Mistakes & Pitfall Guide (Lessons Learned)
β Mistake 1: Declaring as "Chemical Mixture" (3824.99.93.97)
π Consequence: 40% Tariff instead of 35%. Loss of $5 per $100 value.
β Mistake 2: Declaring as "Pre-formed Sand" (3824.99.55.00) when itβs a Liquid Formula
π Consequence: Customs may reject or reclassify, causing delays + potential 38.7% tax + penalties.
β Mistake 3: Failing to provide SDS or Usage Description
π Consequence: Customs cannot verify "Casting Binder" status β Risk of being downgraded to higher-tax categories.
β Mistake 4: Ignoring Section 122 Tariff
π Consequence: Underestimating total cost. Section 122 (10%) is often overlooked but applies to many chemical imports.
β Correct Practice:
"Flame Retardant Mould-Core Binder for Metal Casting, Liquid Form, Phosphate-Free, Model XYZ, SDS Available"
π― VII. Conclusion: Professional Declaration Saves Money!
π― Remember the Mantra:
πΉ "Binder vs. Chemical: 5% Savings!"
πΉ "SDS is King: Prove the Use!"
πΉ "Section 122 + 301: 35% Total for Binders!"
π Pro Tip:
- If your product is phosphate-based, verify if it strictly falls under
2835.29.51.00(39.1%).- If it is a functional binder for casting, fight for
3824.99.70.00(35%).- Apply for an Advance Ruling with US Customs (CBP) to lock in the 35% rate.
π£ Immediate Action:
π Contact your customs broker with SDS + Usage Proof.
π Secure the 35% Tariff Rate for your Flame Retardant Casting Formula!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Every Percent Saved is Profit Gained!
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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.