🧪 Dipropylthiocarbamate Fungicide (Fungicides of this Type)

🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What exactly is "Dipropylthiocarbamate"?

Dipropylthiocarbamate (often found in the form of salts like Ziram or Maneb, though strictly speaking, Dipropylthiocarbamic acid derivatives are distinct from Ethylenebis(dithiocarbamates)) is a synthetic organic compound primarily used as a fungicide and bactericide in agriculture.

In international trade, the classification depends heavily on its chemical nature and formulation:

1. Pure Chemical Substance: If it is a single, defined organic sulfur compound used primarily as an antibiotic-like antimicrobial agent (depending on specific regulatory definitions), it may fall under Chapter 29 (Organic Chemicals).
2. Formulated Fungicide: If it is mixed with other ingredients, binders, or is part of a commercial pesticide formulation, it falls under Chapter 38 (Miscellaneous Chemical Products), specifically heading 3808 (Insecticides, Rodenticides, Fungicides, etc.).

⚠️ Key Distinction Point: * If the product is a pure chemical entity with fungicidal properties classified as an "antibiotic" or specific organic sulfur compound under Chapter 29 → HS 2941 or 2941.90. * If the product is a formulated pesticide containing "dithiocarbamates" or similar sulfur-based fungicides → HS 3808. * Note: While Dipropylthiocarbamate is chemically distinct from Ethylenebis(dithiocarbamates (EBDCs), customs authorities often group thiocarbamate-based fungicides under 3808 if formulated for agricultural use.

📦 II. HS Code Classification Details (2026 Latest Tariff Authority对照)

Based on the provided data for "Dipropylthiocarbamate Fungicide," here are the four potential HS Codes and their corresponding tax structures for imports into the US (from China).

🔍 Critical Reminder: * Chapter 29 (2941.90.x): Applies if the product is considered a pure chemical with antibiotic/antimicrobial properties. Taxes are significantly lower (10% total). * Chapter 38 (3808.92.x): Applies if the product is a formulated pesticide or classified under dithiocarbamate/thiocarbamate fungicides. Taxes are significantly higher (35-38.7% total). * Misclassification Risk: Declaring a formulated pesticide as a pure chemical (2941) to avoid higher taxes can lead to customs audits, penalties, and back-taxes.

💰 III. 2026 Latest Tariff Rate Breakdown (Detailed Tax Clauses)

✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: From November 10, 2025 (including subsequent imports)

🎯 1. 2941.90.50.00 —— Chemically Synthesized Antibiotics/Bactericides

📌 Explanation: * This classification treats the fungicide as a chemical antibiotic/antimicrobial. * Only the 10% Section 122 duty applies. No 25% Section 301 tariff. * Total: 10%. This is the lowest possible tax rate among the options.

🎯 2. 2941.90.10.50 —— Other Antibiotics/Organic Sulfur Compounds

📌 Note: * Same tax structure as 2941.90.50.00. * Relies on the chemical being defined as an "organic sulfur compound" with antibiotic properties.

🎯 3. 3808.92.24.00 —— Fungicides containing Dithiocarbamates

📌 Explanation: * This code assumes the product is a formulated fungicide containing dithiocarbamate-like chemicals. * Subject to both 25% (Section 301) and 10% (Section 122) tariffs. * Total: 35%.

🎯 4. 3808.92.28.00 —— Other Pesticides/Fungicides (Thiocarbamate Core)

📌 Note: * This is the highest tax rate option. * Applies to formulated fungicides that do not fit specific dithiocarbamate codes but are still recognized as pesticides. * Includes a 3.7% base duty on top of the 35% in additional tariffs.

🛠️ IV. Customs Clearance Practical Advice (Actionable Guide)

✅ 1. Documentation Checklist (Essential)

✅ 2. Declaration Strategy (Key Rules)

🔥 “Purity Defines Code, Formulation Dictates Tax!”

📌 Strategic Advice: * If your product is >90% pure and not mixed with inert carriers, push for Chapter 29 (2941.90.xx). * If it is mixed with fillers/binders for direct agricultural use, it must be Chapter 38 (3808.92.xx).

✅ 3. Special Considerations

🌍 V. Global Market Comparison (2026 Latest)

📌 Conclusion: * USA is the most complex market due to Section 301 and Section 122 tariffs. * Classification as "Pure Chemical" (Chapter 29) saves ~25-28.7% compared to "Formulated Fungicide" (Chapter 38). * EU and Japan have strict environmental regulations (REACH, JIS) but no additional punitive tariffs like the US.

📌 VI. Common Errors & Pitfalls (Lessons Learned)

❌ Error 1: Declaring a formulated pesticide as a pure chemical (2941) to save 25% tariff. 👉 Consequence: Customs will seize the shipment, demand back-taxes (35-38.7% + penalties), and potentially blacklist the importer.

❌ Error 2: Misidentifying Dipropylthiocarbamate as a Dithiocarbamate (3808.92.24) when it is a distinct chemical. 👉 Consequence: May still be classified under 3808.92.28 (38.7%), but the explanation must be chemically accurate.

❌ Error 3: Ignoring EPA Registration for 3808 codes. 👉 Consequence: The product cannot be legally sold or cleared in the US without EPA approval.

✅ Correct Practice:

"Dipropylthiocarbamate, 98% Pure, Organic Sulfur Compound, CAS [Insert Number], For Industrial/Formulation Use, Not a Finished Pesticide Product"

🎯 VII. Conclusion: Precision in Classification, Savings in Duty

🎯 Remember the Key Principle:

🔹 "Pure Chemical = 2941 (10% Tax)"
🔹 "Formulated Pesticide = 3808 (35-38.7% Tax)"
🔹 "Documentation is King: COA & CAS Number Must Match!"

📌 Tip: If your company manufactures Dipropylthiocarbamate, ensure the Certificate of Analysis (COA) clearly states it is a single substance and not a mixture. This is your strongest argument for the 10% tariff rate under 2941.90.50.00.

📣 Immediate Action:

📞 Contact your customs broker and provide the COA and CAS Number. 📄 Request a Pre-Ruling (PRT) from US Customs if the product is new to your supply chain. 🚀 Optimize your supply chain to clarify the "Pure vs. Formulated" status to minimize tax liability.

✨ Professional Clearance Starts with Accurate Classification!
💼 Every Percentage Point Matters in Chemical Trade!