Ammonium Phosphate Fire Extinguishing Agent Mixture
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3813001000 | 35.0% | CN | US | Official Doc |
| 2835292000 | 36.5% | CN | US | Official Doc |
| 3813005000 | 38.7% | CN | US | Official Doc |
| 3105400010 | 35.0% | CN | US | Official Doc |
| 3105400050 | 35.0% | CN | US | Official Doc |
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🛑 Ammonium Phosphate Fire Extinguishing Agent Mixture
🌐 HS Code Classification & Customs Clearance Guide | 2026 Latest Tariff Breakdown | Expert-Level Import Strategy
📌 One Product, Multiple HS Codes — Why? What’s the Real Tax Impact?
🔍 You’re importing a fire extinguishing agent — but is it a firefighting chemical, a fertilizer, or a chemical compound?
The answer lies in how it’s classified, and which HS Code applies — because one product, different codes = wildly different tariffs.
This guide breaks down every possible HS Code for Ammonium Phosphate Fire Extinguishing Agent Mixture, with exact tax details, legal basis, and clearance strategies — all based on real data from the U.S. tariff schedule.
📦 1. HS Code Classification Matrix (2026 U.S. Tariff Authority)
| HS Code | Product Description | Classification Type | Key Determinant |
|---|---|---|---|
3813.00.10.00 |
Ammonium phosphate fire extinguishing agent mixture, fully inorganic | Pure inorganic fire suppressant | Composition: 100% inorganic |
2835.29.20.00 |
Ammonium phosphate fire extinguishing agent mixture, phosphate salts (other) | Phosphate salt category | Chemical family: Phosphates |
3813.00.50.00 |
Ammonium phosphate fire extinguishing agent mixture, other fire extinguishing agents | Other fire suppression materials | Not covered under inorganic or phosphate salt |
3105.40.00.10 |
Ammonium phosphate fire extinguishing agent mixture, nitrogen & phosphorus fertilizer blend | Fertilizer (N & P content) | Contains plant nutrients |
3105.40.00.50 |
Ammonium phosphate fire extinguishing agent mixture, other mineral/chemical fertilizers | General fertilizer category | Fertilizer-like composition |
⚠️ Critical Insight:
- The same physical product can be classified under 5 different HS codes, depending on how it’s described, what’s in it, and how it’s used. - Misclassification = 35% vs 38.7% tariff → $10k+ difference per container!
💰 2. 2026 U.S. Tariff Breakdown (All Codes Apply to China-Origin Goods)
✅ Applicable Country: China (CN)
✅ Effective Date: November 10, 2025 (with retroactive application)
✅ Legal Basis: U.S. Trade Act 301, IEEPA, and U.S. Customs Footnotes
🎯 1. 3813.00.10.00 — Fully Inorganic Fire Extinguishing Mixture
| Tax Component | Rate | Legal Basis |
|---|---|---|
| Base Tariff | 0.0% | HTSUS §3813.00.10 |
| USITC 301 Tariff | +25.0% | Footnote 9903.88.01 (Section 301) |
| IEEPA 122 Clause Tariff | +10.0% | IEEPA: 9903.01.25 (International Emergency Economic Powers Act) |
| Total Duty | 35.0% | CIF × 35% |
| De Minimis Threshold | ❌ Not applicable (denied) | |
| Legal Pathway | IEEPA:9903.01.25 → USITC:3813.00.10.00 → FOOTNOTE:9903.88.01 |
📌 Why This Code?
- Applies only if the mixture is 100% inorganic (e.g., ammonium phosphate + inert fillers). - No organic binders, no fertilizer additives. - Best-case scenario for lower tax.
🎯 2. 2835.29.20.00 — Phosphate Salts (Other) Fire Extinguishing Mixture
| Tax Component | Rate | Legal Basis |
|---|---|---|
| Base Tariff | 1.5% | HTSUS §2835.29.20 |
| USITC 301 Tariff | +25.0% | Footnote 9903.88.01 |
| IEEPA 122 Clause Tariff | +10.0% | IEEPA: 9903.01.25 |
| Total Duty | 36.5% | CIF × 36.5% |
| De Minimis Threshold | ❌ Not applicable | |
| Legal Pathway | IEEPA:9903.01.25 → USITC:2835.29.20.00 → FOOTNOTE:9903.88.01 |
📌 Why This Code?
- Applies when the product is classified under phosphate salts, even if used for firefighting. - Higher base rate (1.5%) → slightly more expensive than inorganic code. - Still subject to 25% + 10%附加 taxes.
🎯 3. 3813.00.50.00 — Other Fire Extinguishing Agents & Fillers
| Tax Component | Rate | Legal Basis |
|---|---|---|
| Base Tariff | 3.7% | HTSUS §3813.00.50 |
| USITC 301 Tariff | +25.0% | Footnote 9903.88.01 |
| IEEPA 122 Clause Tariff | +10.0% | IEEPA: 9903.01.25 |
| Total Duty | 38.7% | CIF × 38.7% |
| De Minimis Threshold | ❌ Not applicable | |
| Legal Pathway | IEEPA:9903.01.25 → USITC:3813.00.50.00 → FOOTNOTE:9903.88.01 |
📌 Why This Code?
- Applies when the mixture doesn’t fit into inorganic or phosphate salt categories. - Often used for mixed formulations or non-standard fire suppressants. - Highest base tariff → most expensive option.
🎯 4. 3105.40.00.10 — Nitrogen & Phosphorus Fertilizer Blend
| Tax Component | Rate | Legal Basis |
|---|---|---|
| Base Tariff | 0.0% | HTSUS §3105.40.00 |
| USITC 301 Tariff | +25.0% | Footnote 9903.88.01 |
| IEEPA 122 Clause Tariff | +10.0% | IEEPA: 9903.01.25 |
| Total Duty | 35.0% | CIF × 35% |
| De Minimis Threshold | ❌ Not applicable | |
| Legal Pathway | IEEPA:9903.01.25 → USITC:3105.40.00.10 → FOOTNOTE:9903.88.01 |
📌 Why This Code?
- Applies if the mixture contains significant plant nutrients (N & P). - Even if used for fire suppression, if it’s marketed as fertilizer, it can be reclassified. - High risk of misclassification — many exporters unknowingly trigger this code.
🎯 5. 3105.40.00.50 — Other Mineral/Chemical Fertilizers
| Tax Component | Rate | Legal Basis |
|---|---|---|
| Base Tariff | 0.0% | HTSUS §3105.40.00 |
| USITC 301 Tariff | +25.0% | Footnote 9903.88.01 |
| IEEPA 122 Clause Tariff | +10.0% | IEEPA: 9903.01.25 |
| Total Duty | 35.0% | CIF × 35% |
| De Minimis Threshold | ❌ Not applicable | |
| Legal Pathway | IEEPA:9903.01.25 → USITC:3105.40.00.50 → FOOTNOTE:9903.88.01 |
📌 Why This Code?
- Applies to fertilizer-like chemical mixtures, even if used for firefighting. - Most dangerous for exporters — if your product is packaged or labeled as fertilizer, this code applies. - No base tariff, but same 35% total as3813.00.10.00.
🛠️ 3. Customs Clearance Best Practices (Avoid Costly Mistakes)
✅ 1. Required Documentation (Must-Have)
| Document | Why It Matters |
|---|---|
| ✅ Technical Data Sheet (TDS) | Proves composition: inorganic? organic? fertilizer content? |
| ✅ Product Safety Data Sheet (SDS) | Shows chemical identity, hazards, and intended use |
| ✅ Commercial Invoice | Must clearly state: “Ammonium Phosphate Fire Extinguishing Agent Mixture” — not “fertilizer” |
| ✅ Packing List | Shows net weight, packaging type, and whether it’s bulk or containerized |
| ✅ Certificate of Origin (CO) | Required for 301/IEEPA tariffs — China origin = 35–38.7% |
| ✅ Labeling & Packaging Photos | Proves no fertilizer branding or agricultural claims |
| ✅ Third-Party Lab Test Report | Confirms no organic binders, no N/P fertilizer content |
✅ 2.申报技巧(Pro Tips)
🔥 “Name it Right, Classify it Right, Pay Less Duty!”
| Scenario | Correct HS Code | Common Mistake |
|---|---|---|
| Pure inorganic powder, no fertilizer | 3813.00.10.00 |
Misclassified as fertilizer → 35% instead of 35% (same, but risky) |
| Contains 1% organic binder | 3813.00.50.00 |
Misclassified as inorganic → 38.7% vs 35% |
| Marketed as “fertilizer” or “plant nutrient” | 3105.40.00.10 |
Biggest risk — triggers fertilizer rules, even if used for fire |
| Labeled “fire suppressant” but contains N/P | 3105.40.00.50 |
Can be challenged — audit risk |
| Bulk shipment with no labeling | 3813.00.50.00 |
Default classification → highest tax |
✅ 3. Risk Mitigation Strategies
| Risk | Solution |
|---|---|
| Fertilizer Misclassification | Avoid any mention of “nitrogen”, “phosphorus”, “plant food”, “agricultural” in labeling or docs |
| IEEPA/301 Tariff Exposure | Consider Vietnam, Mexico, or Malaysia as origin — IEEPA exemption possible |
| High Tax Burden | Apply for Advance Ruling (Pre-Approval) from U.S. Customs |
| Audit Risk | Use third-party lab testing to prove inorganic composition |
| Customs Delay | Submit pre-clearance application with full technical data |
🌍 4. Global Market Comparison (2026)
| Country | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3813.00.10.00 (best) |
35.0% (China) | None (but 301/IEEPA apply) | Highest risk |
| 🇨🇳 China | 3813.00.10.00 |
5% | CCC, RoHS | No 301/IEEPA |
| 🇪🇺 EU | 3813.00.10.00 |
0% (if CE) | CE, REACH | No extra tariffs |
| 🇦🇺 Australia | 3813.00.10.00 |
5% | RCM | No 301/IEEPA |
| 🇯🇵 Japan | 3813.00.10.00 |
0% | PSE | No extra taxes |
📌 Insight:
- Only the U.S. applies 301 + IEEPA tariffs. - China-origin goods face 35–38.7% duty — not negotiable. - Non-China origin? Consider Vietnam/Mexico — IEEPA exemption possible.
🚨 5. Common Mistakes & Legal Pitfalls (Avoid These!)
❌ Mistake 1: Labeling as “fertilizer” or “plant nutrient”
👉 Result: 3105.40.00.10 → 35% duty + audit risk + possible seizure
❌ Mistake 2: Using “phosphate salt” in product name
👉 Result: 2835.29.20.00 → 36.5% instead of 35%
❌ Mistake 3: No TDS or SDS provided
👉 Result: Customs delays → $500+/day detention fees
❌ Mistake 4: Declaring as “fire extinguisher” instead of “agent mixture”
👉 Result: Misclassification → higher tariff or rejection
✅ Correct Declaration Example:
"Ammonium Phosphate Fire Extinguishing Agent Mixture, Inorganic, Non-Fertilizer, Not for Agricultural Use, 99% Pure, No Organic Binders, SDS & TDS Attached"
🎯 6. Final Verdict: How to Minimize Tax & Avoid Risk
✅ Best HS Code:
3813.00.10.00— 35.0% total
✅ Best Strategy:
- Prove 100% inorganic composition
- Avoid fertilizer-related terms
- Use non-China origin if possible
- Apply for Advance Ruling
- Hire a U.S.-based customs broker with 301/IEEPA experience
📌 7. Quick Reference: Tax Summary Table
| HS Code | Base Tariff | 301 Tariff | IEEPA 122 | Total | Best For |
|---|---|---|---|---|---|
3813.00.10.00 |
0.0% | 25.0% | 10.0% | 35.0% | Pure inorganic |
2835.29.20.00 |
1.5% | 25.0% | 10.0% | 36.5% | Phosphate salts |
3813.00.50.00 |
3.7% | 25.0% | 10.0% | 38.7% | Mixed/other agents |
3105.40.00.10 |
0.0% | 25.0% | 10.0% | 35.0% | Fertilizer-like |
3105.40.00.50 |
0.0% | 25.0% | 10.0% | 35.0% | General fertilizer |
📌 Bottom Line:
- 35.0% is the minimum for China-origin goods. - 38.7% is the worst-case — avoid if possible. - Never label as fertilizer — it’s a legal trap.
🎯 8. Call to Action: Don’t Get Caught Off Guard!
📞 Contact a U.S. Customs Broker TODAY
📄 Submit your TDS, SDS, and product photos
📝 Apply for an Advance Ruling (Pre-Approval)
🚀 Avoid $10k+ in unexpected duties
✨ Professional Clearance Starts with Accurate Classification
💼 Your product’s fate is in the HS Code — get it right, save thousands!
📣 Pro Tip:
If your product is originating from Vietnam, Mexico, or Malaysia, you may qualify for IEEPA exemption — tariff drops to 0%–5%.
Switch your supply chain? We can help with origin reclassification.
🔐 Stay Compliant. Stay Profitable. Stay Ahead.
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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.