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π§ͺ Sterilizing Agent Mixture (Wettable Powder)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
π I. Product Definition & Classification: What Exactly Is a "Wettable Powder" Sterilizer?
A Sterilizing Agent Mixture (Wettable Powder, WP) is a dry, powdery pesticide formulation containing one or more active sterilizing/protective ingredients mixed with inert carriers and wetting agents. When mixed with water, it forms a suspension for spraying.
In international trade, classification depends heavily on: 1. Active Ingredient Type: Is it an organic compound (usually HS 2933, 2934, 3808) or inorganic (HS 3808)? 2. Primary Purpose: Is it primarily for plant protection (HS 3808) or industrial disinfection (HS 3808/3004)? 3. Formulation: "Wettable Powder" is a dosage form, not a chemical identity. The HS code is driven by the chemical nature of the active ingredient if specified, or the general pesticide category if mixed/unknown.
β οΈ Key Distinction:
- If the product is a pure chemical substance in powder form β Classify under Chapter 29 (Organic Chemicals).
- If it is a mixture/formulation ready for agricultural or disinfection use β Classify under HS 3808 (Pesticides, Insecticides, Fungicides, Rodenticides).
- Most commercial "Sterilizing Agent Mixtures" are formulations and thus fall under 3808.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority)
| HS Code | Product Description | Application Scenario | Active Ingredient Type |
|---|---|---|---|
| 3808.93.00.00 | Fungicides, insecticides, rodenticides... other (if active ingredient is unspecified or mixed organic) | General agricultural fungicides, mixed sterilizing powders | Organic mixtures |
| 3808.94.00.00 | Other preparations (not pure chemicals) | Commercial sterilizing powder mixtures for agriculture/plant protection | Formulations |
| 3808.99.00.00 | Other (including inorganic fungicides/sterilizers) | Copper-based, sulfur-based, or other inorganic sterilizing powders | Inorganic |
| 3004.90.00.00 | Medicinal preparations | If intended for medical/human sterilization (e.g., hospital surface cleaners) | Pharmaceutical |
| 2933.xxxxxxxx | Organic chemicals | If the product is a single pure active ingredient (not a mixture) | Pure Compound |
π Critical Note:
- HS 3808 is the most common category for agricultural/industrial sterilizing mixtures.
- If the mixture contains multiple active ingredients, customs typically classify based on the principal active ingredient. If indeterminate, use 3808.99 or 3808.94.
- "Wettable Powder" is a formulation type; do not classify by form (e.g., "powder") but by chemical function (fungicide/sterilizer).
π° III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
β Applicable Country: United States (US)
β Country of Origin: China (CN)
β Effective Date: November 10, 2025 (inclusive of subsequent imports)
π― 1. 3808.94.00.00 β Other Pesticide Preparations (Organic Mixtures)
| Item | Content |
|---|---|
| Base Rate | 0% (ad valorem) |
| USITC Surcharge | +25% (Under USITC Footnote 9903.88.01 for certain pesticides) |
| IEEPA Surcharge | +10% (For Chinese/Hong Kong products, effective Nov 10, 2025) |
| Total Rate | 35% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Eligibility | β Not Eligible (deny_de_minimis) |
| Legal Pathway | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3808.94.00.00 β FOOTNOTE:9903.88.01 |
π Explanation:
- The 25% USITC surcharge applies to many pesticide formulations under Section 301 duties.
- The 10% IEEPA surcharge is a blanket penalty on Chinese goods.
- Total 35% is high; accurate ingredient disclosure is crucial to avoid penalties.
π― 2. 3808.99.00.00 β Other Pesticide Preparations (Inorganic or Unspecified)
| Item | Content |
|---|---|
| Base Rate | 0% |
| USITC Surcharge | +25% |
| IEEPA Surcharge | +10% |
| Total Rate | 35% |
| Tax Calculation | CIF Γ 35% |
| De Minimis Eligibility | β Not Eligible |
| Legal Pathway | IEEPA:9901.25 β IEEPA:9903.01.24 β USITC:3808.99.00.00 β FOOTNOTE:9903.88.01 |
π Note:
- Inorganic sterilizers (e.g., copper sulfate, lime sulfur) fall here.
- Same high tariff rate; no exemption for formulation type.
π― 3. 3004.90.00.00 β Medicinal Preparations (Non-Agricultural)
| Item | Content |
|---|---|
| Base Rate | 0% |
| USITC Surcharge | +25% (if subject to Section 301 list) |
| IEEPA Surcharge | +10% |
| Total Rate | 35% |
| De Minimis Eligibility | β Not Eligible |
| Legal Pathway | IEEPA:9903.01.25 β USITC:3004.90.00.00 |
π Note:
- If the product is labeled for human/medical use (e.g., surgical instrument sterilizer), it may be classified under Chapter 30.
- Caution: Misclassifying agricultural pesticides as medicinals can lead to FDA/USDA seizure.
π οΈ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Guide)
β 1. Required Documentation Checklist (Non-Negotiable)
| Document | Mandatory | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must list all active ingredients, percentages, and inert components. |
| β Certificate of Analysis (COA) | βοΈ | Proves concentration of active sterilizing agents. |
| β Label & Packaging Photos | βοΈ | Must match declared HS code; "Pesticide" or "Sterilizer" must be clearly stated. |
| β EPA Registration Number (if agricultural) | βοΈ | Critical for US import. Without EPA registration, goods will be detained. |
| β MSDS/SDS | βοΈ | For safety data and hazard classification. |
| β Commercial Invoice | βοΈ | Clearly state "Sterilizing Agent Mixture, Wettable Powder, for [Agricultural/Industrial] Use". |
| β Country of Origin Certificate | βοΈ | To prove Chinese origin for tariff calculation. |
β 2. Declaration Tips (Key Mantra)
π₯ "Declare Active, Not Form; EPA First, HS Second!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Agricultural Fungicide WP | 3808.94.00.00 + EPA Reg. # |
Declare as "General Powder" β EPA Violation |
| Industrial Surface Sterilizer | 3808.99.00.00 |
Declare as "Medical" β FDA/Jurisdiction Conflict |
| Pure Active Ingredient | 2933.xxxxxxxx |
Declare as "Mixture" β Underpayment of Duty |
| Mixed Pesticide Blend | 3808.94.00.00 (Principal Active) |
Declare as "Unknown Chemical" β Detention |
β 3. Special Cases Handling
| Case | Handling Advice |
|---|---|
| EPA Exempt (e.g., soap-based sterilizers) | Provide EPA Exemption Letter; may qualify for lower duties if properly classified. |
| Biological Sterilizers (e.g., Bacillus subtilis) | Classify under 3808.99.00.00 or 3004.90.00.00; provide strain certification. |
| OEM Private Label | Ensure the label matches the EPA registration of the product, not just the manufacturer. |
| Mixed with Fertilizers | If primarily a fertilizer with sterilizing additive, may be classified under 3105 (Fertilizers); consult expert. |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification | Note |
|---|---|---|---|---|
| πΊπΈ USA | 3808.94.00.00 |
35% (China) | EPA Registration | Strict pesticide enforcement |
| π¨π³ China | 3808.94.00.00 |
0%~5% | Pesticide License | Domestic registration required |
| πͺπΊ EU | 3808.94.00.00 |
0% (if compliant) | EU Pesticide Approval | REACH compliance mandatory |
| π¦πΊ Australia | 3808.94.00.00 |
5% | APVMA Approval | High regulatory barrier |
| π―π΅ Japan | 3808.94.00.00 |
0%~5% | MHLW/MAFF Approval | Strict residue limits |
π Conclusion:
- USA and EU have strict pesticide/sterilizer regulations; EPA/EU Approval is non-negotiable for legal import.
- Tariffs are high for Chinese products; consider supply chain diversification if cost-sensitive.
π VI. Common Errors & Pitfalls (Lessons Learned)
β Error 1: Declaring as "General Chemical Powder"
π Consequence: Customs flags it as undeclared pesticide β Detention & Destruction.
β Error 2: Missing EPA Registration Number on Invoice
π Consequence: USDA/EPA Refusal Entry; goods cannot enter US ports.
β Error 3: Misclassifying Agricultural Sterilizers as Medicinals (3004)
π Consequence: FDA Jurisdiction Conflict; potential fines for unapproved drug import.
β Error 4: Not Disclosing Active Ingredient Percentage
π Consequence: Customs cannot verify HS code β Audit & Back Taxes.
β Correct Practice:
"Fungicide, Wettable Powder, Active: Mancozeb 80%, Inerts 20%, EPA Reg. No. XXXXXX-XX, For Agricultural Use Only"
π― VII. Conclusion: Precision in Pesticide Classification Saves Millions!
π― Remember the Mantra:
πΉ "EPA First, HS Second, Active Ingredient is King!"
πΉ "No EPA, No Entry; Wrong HS, Heavy Penalty!"
π Pro Tip:
If your sterilizing agent is biological (e.g., beneficial bacteria), check for EPA Biopesticide Exemptions; tariffs may be lower, and regulations less stringent.
Always apply for USITC Tariff Classifications or Customs Rulings for novel mixtures.
π£ Immediate Action:
π Contact a licensed US Customs Broker + Provide EPA Registration + Submit Detailed SDS
π Ensure your sterilizing agent complies with EPA & FDA, cleans smoothly, and protects your margin!
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every Percent of Duty Matters β Know Your HS Code!
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.