🧪 Bromochloromethane Mixed Gas – HS Code Classification & Tariff Breakdown (2026)

🌐 HS Code Reference & Customs Clearance Guide | Latest Tariff Analysis | Strategic Entry Strategy
📌 I. Product Definition & Classification: What is "Bromochloromethane Mixed Gas"?

Bromochloromethane Mixed Gas is a chemical substance primarily used as a fire extinguishing agent or propellant. In international trade, its classification depends heavily on its specific chemical composition (specifically the presence of halogens like Bromine and Chlorine) and its intended application.

⚠️ Key Distinction:
- If classified strictly as a fire extinguishing mixture without specific halogenated hydrocarbon details → It may fall under Chemical Mixtures (3813).
- If classified based on its specific chemical nature as a halogenated hydrocarbon derivative → It falls under Halogenated Hydrocarbons (2903).
- If classified as a general halogenated hydrocarbon mixture → It may fall under Miscellaneous Chemical Products (3824).

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

Below is the detailed breakdown of the 5 possible HS Codes provided in the data, along with their logical justifications and tax implications.

🔍 Critical Insight:
- Lowest Tax Option: 2903.79.10.00 at 17.5% is the most cost-effective if the product is strictly identified as Bromochloromethane.
- Highest Risk Option: 3824.99.50.00 at 41.5% carries the highest tariff burden.
- Middle Ground: 3813.00.10.00 (35.0%) is suitable if the primary declared purpose is fire extinguishing, regardless of chemical specificity.

💰 III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)

✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: Post-2025 November 10 (Including subsequent imports)

🎯 1. 3813.00.10.00 – Chemical Mixed Gas (Fire Extinguisher/Propellant)

📌 Explanation:
- Base Tariff (0%): Standard duty for chemical mixtures under Section 38.
- Section 301 Surtax (+25%): Applied due to US-China trade tensions.
- 122 Clause Tariff (+10%): Additional surcharge based on specific trade clauses targeting Chinese chemical products.

🎯 2. 2903.79.10.00 – Bromochloromethane (Specific Chemical)

📌 Explanation:
- This is the most favorable classification if the product can be legally defined strictly as "Bromochloromethane."
- The Section 301 surtax is lower (7.5%) compared to general mixtures (25%).

🎯 3. 2903.79.90.70 – Halogenated Hydrocarbons (2+ Halogens)

📌 Explanation:
- Applies when the product is classified under a sub-category for hydrocarbons with multiple different halogens (Br + Cl).
- Higher basic tariff (3.7%) makes it more expensive than 2903.79.10.00.

🎯 4. 3824.99.55.00 – Halogenated Hydrocarbon Mixtures

📌 Explanation:
- Classified as a "Halogenated Hydrocarbon Mixture" under miscellaneous chemical products (Section 38).
- Same tax burden as 2903.79.90.70 due to similar surtax structures.

🎯 5. 3824.99.50.00 – Chlorinated Mixtures (Others)

📌 Explanation:
- Highest Tax Rate: This classification assumes the product is primarily a "Chlorinated" mixture with specific exclusions.
- High basic tariff (6.5%) + standard surtaxes (35%) = 41.5% Total.
- Avoid this classification unless strictly required by customs authority interpretation.

🛠️ IV. Customs Clearance Practical Advice (Avoid Pitfalls)

✅ 1. Required Documentation Checklist

✅ 2. Declaration Strategy (Key Tips)

🔥 "Define Chemistry, Declare Purpose!"

⚠️ Critical Warning:
- Do NOT misdeclare a pure chemical (2903) as a general mixture (3824) to avoid scrutiny; however, note that 3824 rates are often higher.
- Ensure the CAS Number is listed on the invoice to prove the specific chemical identity.

🌍 V. Global Market Clearance Comparison (2026 Latest)

📌 Conclusion:
- USA imposes significant surtaxes (Section 301 + Clause 122), making classification accuracy critical.
- EU focuses on REACH compliance rather than high tariffs.
- China Origin products face highest tariffs in the US (17.5% - 41.5%).

📌 VI. Common Errors & Pitfalls (Blood Lessons)

❌ Error 1: Declaring "Bromochloromethane" as a generic "Chemical Mixture" (3824)
👉 Consequence: Higher tax rate (38.7% or 41.5%) instead of 17.5%. Unnecessary cost increase!

❌ Error 2: Omitting the CAS Number on the Invoice
👉 Consequence: Customs may reclassify the product, leading to delays, audits, and potential penalties.

❌ Error 3: Misidentifying the Primary Purpose
👉 Consequence: If declared as "Fire Extinguisher" (3813) but lacks proper EPA/UN certification, goods may be seized or returned.

✅ Correct Practice:

"Bromochloromethane (CAS 74-97-5) Mixed Gas, for Fire Extinguishing Purposes, Purity 99%, Non-Flammable"

🎯 VII. Conclusion: Professional Classification Saves Money!

🎯 Remember the Rules:

🔹 "Specific Chemical First, Mixture Second!"
🔹 "17.5% vs 41.5%: A 24% Difference is Huge!"
🔹 "Declare CAS, Declare Use, Avoid Penalties!"

📌 Pro Tip:
If your product is Bromochloromethane specifically, fight for the 2903.79.10.00 classification to secure the 17.5% tax rate.
If it is a complex mixture, verify if 3813.00.10.00 (35%) is more appropriate than 3824 categories.

📣 Immediate Action:

📞 Contact a licensed customs broker + Provide CAS Number + Apply for Advance Ruling (if needed)
🚀 Ensure smooth clearance, minimize tax burden, and avoid compliance risks!

✨ Professional Customs Clearance Starts with Precise Classification!
💼 Every Percent of Tax Saved is Pure Profit!