Refrigerant Mixture (High Purity, Low Moisture)
CN β USAI Analysis
βοΈ Refrigerant Mixture (High Purity, Low Moisture)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
π Part 1: Product Definition & Classification: Do You Really Know "Refrigerant Mixture"?
Refrigerant Mixtures are complex chemical blends primarily used in air conditioning, refrigeration, and heat pump systems. In international trade, they are strictly regulated due to environmental standards (ODS/HFCs) and chemical safety. They are generally classified based on their chemical nature:
1. HFC/HFO Blends (Synthetic Refrigerants):
Examples include R-404A, R-410A, R-448A, R-449A, etc. These are the most common "high purity" mixtures in modern HVAC/R applications.
2. Natural Refrigerant Blends:
Examples include CO2 (R-744), Ammonia (R-717), Hydrocarbons (Propane/R-290, Isobutane/R-600a).
β οΈ Key Distinction Point:
- If the mixture contains Fluorinated Hydrocarbons (HFCs/HFOs) β Classified under Chapter 38 (Chemical Products).
- If the mixture is Ammonia β Classified under Chapter 28 (Inorganic Chemicals).
- If the mixture is Hydrocarbon-only (e.g., R-290) β Sometimes classified under Chapter 29 (Organic Chemicals), but often grouped with HFCs in Chapter 38 for regulatory purposes in some jurisdictions.
- High Purity/Low Moisture indicates it meets industrial/gas cylinder standards, not crude chemical mixtures.
π¦ Part 2: HS Code Classification Details (2026 Latest Tariff Authority Cross-Reference)
| HS Code | Product Description | Applicable Scenario | Chemical Nature |
|---|---|---|---|
3824.99.64 |
Other chemical products and preparations (HFC/HFO mixtures) | R-410A, R-404A, R-448A, R-449A, R-513A (Synthetic Blends) | β Synthetic (HFC/HFO) |
3824.99.65 |
Halogenated derivatives of hydrocarbons, mixtures thereof | Some specific HFC blends or unique formulations not listed elsewhere | β Synthetic (HFC) |
2814.20.00 |
Ammonia, anhydrous or in aqueous solution | R-717 (High Purity Ammonia) | β Inorganic |
2903.39.80 |
Fluorinated hydrocarbons (Individual HFCs, e.g., R-134a) | Note: Mixtures usually go to 3824, but pure R-134a may go here depending on definition | β Organic |
2901.23.00 |
Acyclic alkanes, containing three carbon atoms (Propane R-290) | R-290 (Hydrocarbon) | β Organic |
2901.29.00 |
Other acyclic saturated hydrocarbons (Isobutane R-600a) | R-600a (Hydrocarbon) | β Organic |
π Key Reminder:
- Most commercial "Refrigerant Mixtures" (like R-400, R-500 series, or modern replacements like R-448/449) fall under3824.99.64in the US.
- Do not classify under3824.99.99(Other) if a specific subheading for halogenated hydrocarbons or chemical preparations exists.
- Ammonia is strictly2814.20.00, not Chapter 38.
- Hydrocarbons (R-290, R-600a) are often2901.23.00or2901.29.00, but check specific country rules as they are flammable and highly regulated.
π° Part 3: 2026 Latest Tariff Rate Details (Including Surtaxes & Policy Surcharges)
β Applicable Country: United States (US)
β Country of Origin: China (CN)
β Effective Date: November 10, 2025 onwards (for subsequent imports)
π― 1. 3824.99.64 ββ Halogenated Hydrocarbon Mixtures (HFC/HFO Blends)
| Item | Content |
|---|---|
| Base Tariff | 5.7% (ad valorem) |
| USITC Surtax | +25% (Under USITC Footnote 9903.88.01, Section 301) |
| IEEPA Surtax | +10% (Against Chinese/HK products, effective Nov 10, 2025) |
| Total Tariff Rate | 40.7% |
| Tax Calculation | CIF Value Γ 40.7% |
| De Minimis Eligibility | β Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3824.99.64 β FOOTNOTE:9903.88.01 |
π Explanation:
- HFC/HFO refrigerants are considered chemical preparations.
- The 25% Section 301 duty applies to many chemical products from China.
- The 10% IEEPA duty is a new additional surcharge effective late 2025.
- Total 40.7% is a very high tariff, significantly impacting profit margins.
π― 2. 2814.20.00 ββ Ammonia, Anhydrous
| Item | Content |
|---|---|
| Base Tariff | 0% |
| USITC Surtax | +25% (Check current Section 301 list; Ammonia is often exempt or subject to different rules) |
| IEEPA Surtax | +10% (If applicable to Chinese chemical inputs) |
| Total Tariff Rate | 10% - 35% (Varies; verify current IEEPA scope for Inorganic Chemicals) |
| Tax Calculation | CIF Value Γ Applicable Rate |
| De Minimis Eligibility | β Not Eligible |
| Legal Basis Path | USITC:2814.20.00 β IEEPA rules apply |
π Note:
- Ammonia is often treated differently due to its industrial importance.
- Always verify if Inorganic Chemicals are fully exempt from the new IEEPA 10% surcharge, as policy adjustments are frequent.
π― 3. 2901.23.00 / 2901.29.00 ββ Hydrocarbon Refrigerants (R-290, R-600a)
| Item | Content |
|---|---|
| Base Tariff | 5.3% - 6.5% |
| USITC Surtax | +25% (Section 301 applies to many organic chemicals) |
| IEEPA Surtax | +10% |
| Total Tariff Rate | 40.3% - 41.5% |
| Tax Calculation | CIF Value Γ Applicable Rate |
| De Minimis Eligibility | β Not Eligible |
| Legal Basis Path | IEEPA:9903.01.25 β USITC:2901.23.00 |
π Note:
- Despite being "natural" refrigerants, their production in China is subject to the same chemical surtaxes.
π οΈ Part 4: Customs Clearance Practical Advice (Real-World Pitfall Avoidance)
β 1. Preparation Checklist (Non-Negotiable)
| Material | Must Provide | Explanation |
|---|---|---|
| β MSDS (Material Safety Data Sheet) | βοΈ | Crucial. Must list all components, purity %, moisture content, and hazard class. |
| β Composition Statement | βοΈ | Exact percentage of each component in the mixture (e.g., R-32 48%, R-125 52%). |
| β Product Photo (Cylinder/Drum) | βοΈ | Label must show HS code, batch number, net weight, and safety warnings. |
| β Third-Party Purity Report | βοΈ | Certificate of Analysis (COA) proving "High Purity" and "Low Moisture" (<10ppm usually). |
| β Commercial Invoice | βοΈ | Clearly state "Refrigerant Mixture, HFC/HFO, High Purity." Avoid vague terms like "Coolant." |
| β UN Certification | βοΈ | Gas cylinders must have valid UN marking for pressurized goods. |
| β EPA SNPTC Approval (if USA) | βοΈ | For certain HFCs, EPA Significant New Alternatives Policy compliance may be required. |
β 2. Declaration Tips (Key Mantra)
π₯ "Composition Clear, Purity Proven, Cylinder Marked, Taxes Predicted!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| HFC Mixture (e.g., R-448A) | 3824.99.64 with full composition breakdown |
Misdeclare as 3824.99.99 β Audit Risk |
| Ammonia (R-717) | 2814.20.00 with "Anhydrous" specified |
Declare as "Chemical Mixture" β Wrong Chapter |
| Hydrocarbon (R-290) | 2901.23.00 with "Propane" specified |
Declare as "Flammable Gas" without HS β Delays |
| Mix of Different Refrigerants | Split lines if HS codes differ | Combine into one line β Classification Error |
β 3. Special Handling
| Scenario | Handling Advice |
|---|---|
| High Purity (>99.9%) | Provide COA. Some countries have lower tariffs for "pure" substances, but mixtures usually stay in 3824. |
| Moisture Content <10ppm | Highlight in invoice. Prevents reclassification as "wet" or impure, which might trigger different safety classifications. |
| OEM/Private Label | Provide authorization letter. Avoid brand-specific issues at customs. |
| Return of Refrigerants | Requires special EPA permits (in US). Do not declare as "new goods." |
π Part 5: Global Main Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirement | Note |
|---|---|---|---|---|
| πΊπΈ USA | 3824.99.64 |
40.7% (China) | EPA SNPTC, UN Packaging | High Surtax. Strict moisture/purity checks. |
| π¨π³ China | 3824.99.64 |
5% | CIQ, MSDS | Standard import duties. |
| πͺπΊ EU | 3824.99.99 |
0% (if FTA) | REACH Registration, GHS Labeling | REACH registration is mandatory for importers. |
| π―π΅ Japan | 3824.99.99 |
0-5% | Fire Service Act, GHS | Strict safety labeling. |
| π¦πΊ Australia | 3824.99.99 |
5% | GHS, UN Packaging | Strict chemical import controls. |
π Conclusion:
- USA has the highest tariff burden for Chinese-made refrigerant mixtures.
- EU requires REACH registration, which is a major compliance hurdle for small exporters.
- Purity and Moisture are key inspection points globally to ensure safety and environmental compliance.
π Part 6: Common Errors & Pitfall Guide (Lessons Learned)
β Error 1: Declaring "Refrigerant" generically without HS Code or Composition
π Consequence: Customs holds shipment for chemical analysis β 30-60 day delay + Demurrage fees.
β Error 2: Misdeclaring HFC Mixtures as "Industrial Gas" (Chapter 28)
π Consequence: Misclassification penalty + Backpay of duties + Potential fraud allegations.
β Error 3: Ignoring Moisture Content in MSDS
π Consequence: Customs may classify as "impure" or subject to additional safety scrutiny if moisture >10ppm for certain applications.
β Error 4: Not providing EPA Compliance for US Imports
π Consequence: FDA/EPA seizure for non-compliant ozone-depleting substances (if applicable) or incomplete SNAP approval.
β Correct Practice:
"HFC Refrigerant Mixture, R-448A, High Purity (>99.5%), Moisture <10ppm, Net Weight 13.6kg, UN 1044, MSDS Attached, EPA Compliant"
π― Part 7: Conclusion: Professional Declaration, Save Costs, Ensure Smooth Clearance!
π― Remember the Mantra:
πΉ "Composition is King, Purity is Queen, Cylinder Markings Save the Scene!"
πΉ "HS Code 3824, Tax 40.7%, Declare Correctly or Pay the Price!"
πΉ "MOISTURE LOW, PURITY HIGH, CUSTOMS FLOW!"
π Pro Tip:
If your refrigerant mixture is manufactured in Vietnam, Thailand, or Malaysia, you may qualify for zero or reduced IEEPA/Section 301 tariffs under US Trade policies.
- Action: Obtain a Certificate of Origin (Form D, ASEAN, etc.) and apply for Pre-Clearance Ruling with US CBP.
π£ Immediate Action:
π Consult a licensed customs broker + Provide Full MSDS + Verify EPA/SNAP Status
π Ensure your refrigerant mixture clears US Customs smoothly, avoids 40%+ unexpected costs, and reaches your client on time!
β¨ Professional Customs Clearance Starts with Precise Classification!
πΌ Every gram of high-purity refrigerant countsβensure every declaration is accurate!
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) 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.