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Organic Synthesis Intermediate Mixture

CN → US
HS编码 关税税率 原产国 目的国 文档
2905591000 40.5% CN US 官方文档
2905593000 35.0% CN US 官方文档
2932999010 13.7% CN US 官方文档
2932999090 13.7% CN US 官方文档
293399 0.0% CN US 官方文档
290000 0.0% CN US 官方文档
3824992600 35.0% CN US 官方文档
3824992900 41.5% CN US 官方文档
293399 0.0% CN US 官方文档
290000 0.0% CN US 官方文档

商品图片

AI分析

🧪 Organic Synthesis Intermediate Mixture


🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Trade Compliance Strategy
📌 I. Product Definition & Classification: What Exactly is an "Organic Synthesis Intermediate Mixture"?

In the international chemical trade, an "Organic Synthesis Intermediate Mixture" is not a single, defined chemical entity but a blend of chemical compounds specifically formulated or encountered as by-products/residues used to facilitate further organic synthesis.

Because "mixture" is a generic term, customs authorities strictly look at the chemical composition and specific constituents to determine the correct HS Code. Misclassification here is common and risky, leading to significant duty discrepancies.

⚠️ Critical Distinction Point:
- Is it a pure specific chemical? → Classify under the specific chemical heading (e.g., 2905, 2932).
- Is it a generic mixture of unknown/specific intermediates? → Classify under "Not Elsewhere Specified" (NES) headings like 2933 or 2900.
- Is it a preparation with a specific function (e.g., binding, catalyst)? → Might fall under Chapter 38 (3824).


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

Based on the provided data, here are the applicable HS Codes for organic intermediates and related chemical preparations:

HS Code Product Description Applicable Scenario Tax Status
2933.99 Other organic chemicals, not elsewhere specified or included, used as intermediates in the manufacture of organic chemicals, including mixtures of such intermediates. Generic Mixture: A blend of intermediates that do not fit into more specific subheadings (e.g., complex mixtures of heterocyclic compounds). Error: Failed to retrieve tax information
2900.00 Organic chemicals, not elsewhere specified or included, including mixtures of organic chemicals used as intermediates in organic synthesis. General NES Mixture: A broad category for organic chemical mixtures used in synthesis where no more specific heading applies. Error: Failed to retrieve tax information
2905.59.10.00 Derivatives of monohydric alcohols (Halogenated, sulfonated, nitrated, or nitrosated). Specific Monohydric Derivative: If the mixture is primarily composed of derivatives of simple monohydric alcohols. 0.0%
2905.59.30.00 Dibromoneopentylglycol (Specific derivative of acyclic alcohol). Specific Dibromoneopentylglycol: If the mixture is predominantly or exclusively this specific compound. 25.0%
2932.99.90.10 Glucosamine and its salts and esters (Heterocyclic compounds with oxygen hetero-atoms). Sugar/Amino-Sugar Intermediate: If the mixture contains significant amounts of Glucosamine derivatives. 3.7%
2932.99.90.90 Other Heterocyclic compounds with oxygen hetero-atoms only (Other/Other). Generic Heterocyclic Mix: Mixtures of oxygen-heterocyclic intermediates not specified elsewhere. 0.0%
3824.99.26.00 Mixtures containing ≥5% aromatic/modifies aromatic substances (Specific listed mixtures). Special Aromatic Preparation: Highly specific industrial mixtures (e.g., containing specific isocyanate homopolymers or fluoro-indenes). 25.0%
3824.99.29.00 Mixtures containing ≥5% aromatic/modifies aromatic substances (Other). Other Aromatic Mixtures: Other prepared binders or chemical preparations with high aromatic content, not specifically listed in 26.00. 0.0%

🔍 Key Takeaway:
- "Mixture" is the keyword. If the product is a pure chemical, it will likely be classified under 2905 or 2932.
- If it is a blend, check if it fits specific lists (3824.99.26) or general "Not Elsewhere Specified" (2933.99, 2900.00).
- Tax Uncertainty: Codes 2933.99 and 2900.00 show "Failed to retrieve tax information" in the source data. This is a major compliance risk!


💰 III. 2026 Latest Tariff Rate Details (Including Add-ons & Policy Surcharges)

Applicable Country: United States (US)
Origin: China (CN) (Note: Tax details in data suggest US-China trade context due to "Additional Tariff" mentions in examples like 2905.59.30.00)
Effective Date: Current 2026 Tariff Schedule

🎯 1. 2933.99 & 2900.00 —— Generic Organic Intermediates (Mixture)

Item Content
Tax Status Error / Unknown
Detail "Failed to retrieve tax information"
Risk Level 🔴 HIGH
Explanation These codes represent a "catch-all" category. The failure to retrieve tax info suggests either:
1. The data source is incomplete.
2. These codes are subject to dynamic policy changes or anti-dumping duties not reflected in standard base rates.
3. They may be subject to Section 301 tariffs if originating from China, but the base rate itself is unclear.
Action Required Do NOT rely on this data alone. You must apply for an Advance Ruling or consult a licensed customs broker to determine if Section 301 tariffs (typically 25%) apply on top of an unknown base rate.

🎯 2. 2905.59.10.00 —— Derivatives of Monohydric Alcohols

Item Content
Base Tariff 0.0%
Additional Tariff 0.0%
Total Tax 0.0%
Explanation Benign classification for simple alcohol derivatives. Low risk, low cost.

🎯 3. 2905.59.30.00 —— Dibromoneopentylglycol

Item Content
Base Tariff 0.0%
Additional Tariff 25.0%
Total Tax 25.0%
Explanation This specific compound is subject to a 25% punitive/additional tariff. This is likely due to US Section 301 List 4 or similar trade remedies against Chinese chemical products. Even if the base is 0%, the effective duty is 25%.

🎯 4. 2932.99.90.10 & 2932.99.90.90 —— Heterocyclic Compounds (Oxygen)

HS Code Base Tax Additional Tax Total Tax
2932.99.90.10 (Glucosamine) 3.7% 0.0% 3.7%
2932.99.90.90 (Other) 0.0% 0.0% 0.0%
Explanation Glucosamine derivatives have a small base duty. Other oxygen-heterocyclic mixtures are duty-free. No additional tariffs indicated in the source data.

🎯 5. 3824.99.26.00 & 3824.99.29.00 —— Aromatic Mixtures (Prepared Preparations)

HS Code Base Tax Additional Tax Total Tax
3824.99.26.00 (Specific Listed Mix) 0.0% 25.0% 25.0%
3824.99.29.00 (Other Aromatic Mix) 0.0% 0.0% 0.0%
Explanation If your mixture contains ≥5% aromatic substances and matches the specific complex descriptions in 26.00 (e.g., specific isocyanate homopolymers), you face a 25% additional tariff. If it is a generic aromatic mixture not listed, it is 0%. Precision in chemical description is critical here.

🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance)

✅ 1. Preparation Checklist (Non-Negotiable)

Document Must Provide Purpose
Chemical Composition Analysis ✔️ Critical. Must list every component by weight % and CAS number. Without this, 2933.99 vs 2905.59 cannot be determined.
Certificate of Analysis (COA) ✔️ Proves the product is an "Intermediate" and not a final consumer chemical.
Process Flowchart ✔️ Shows where this mixture sits in the synthesis chain (supports "Intermediate" classification).
MSDS/SDS ✔️ Safety data sheet. Must match the chemical description in the commercial invoice.
Commercial Invoice ✔️ Must explicitly state: "Mixture of Organic Intermediates for further synthesis" and list key CAS numbers.

✅ 2. Declaration Strategy (Key Mnemonics)

🔥 "Component Determines Code, Aromatics Trigger Tariffs, Errors Cause Delays!"

Scenario Correct Declaration Wrong Declaration Consequence
Mixture is mostly Glucosamine 2932.99.90.10 2933.99 (Generic) Overpaying/Underpaying; Audit Risk
Mixture is Dibromoneopentylglycol 2905.59.30.00 2933.99 25% Tax vs Unknown Tax. Huge Risk!
Mixture has 6% Aromatic X 3824.99.29.00 (If not listed) 3824.99.26.00 (If misidentified as listed) 25% Tax vs 0%. Avoid accidental 25%
Pure Chemical Mixture 2933.99 3824 (Preparation) Classification Error. Chapter 29 is for chemicals; Chapter 38 is for preparations.

✅ 3. Special Handling for "Error" Codes (2933.99, 2900.00)

Since the tax data is missing for these codes: 1. Assume Section 301 Applies: If originating from China, assume an additional 25% tariff on top of the base rate until confirmed otherwise. 2. Apply for Pre-Ruling: Do not clear these shipments without a US CBP Advance Ruling. The "Error" flag indicates ambiguity that customs officers will exploit during random inspections. 3. Chemical Breakdown: You must prove that the mixture does not contain the specific compounds listed in 3824.99.26.00 to avoid the 25% tariff there, or prove it is not a simple alcohol derivative to avoid 2905.59.30.00.


🌍 V. Global Market Comparison (2026 Latest)

Country/Region Recommended HS Code (Example) Estimated Tariff (CN Origin) Key Requirement Notes
🇺🇸 USA 2933.99 or 2900.00 High Risk (Unknown + 25%) Detailed CAS breakdown Section 301 likely applies.
🇨🇳 China 2933.99 ~6-10% (MFN) HS Code precision Standard import duties.
🇪🇺 EU 2933.99 6.5% (Standard) REACH Registration REACH compliance is mandatory.
🇬🇧 UK 2933.99 6.5% (Standard) UK REACH Post-Brexit UK REACH rules apply.

📌 Conclusion:
- The USA is the most complex market for these codes due to missing tax data and potential Section 301 tariffs.
- The EU focuses on environmental/safety registration (REACH) rather than high tariffs, but delays are common if REACH docs are missing.


📌 VI. Common Errors & Pitfall Guide (Lessons Learned)

Error 1: Declaring "Organic Mixture" with no CAS numbers.
👉 Consequence: Customs rejects the entry, demands full chemical analysis, causing weeks of delay.

Error 2: Assuming 2933.99 is 0% tax because it's "other."
👉 Consequence: If it contains specific dibrominated or aromatic compounds, it may fall under 2905.59.30.00 or 3824.99.26.00, triggering a 25% retroactive tax + penalties.

Error 3: Confusing "Intermediate Mixture" with "Preparation."
👉 Consequence: Misclassifying as Chapter 38 (3824) when it should be Chapter 29 (2933) or vice versa. This changes the duty from 0% to 25% or triggers different regulatory licenses.

Correct Approach:

"Mixture of [CAS 123-45-6] (40%) and [CAS 789-01-2] (60%), used as intermediate in organic synthesis. Not a preparation for adhesive or binding."


🎯 VII. Conclusion: Precision is Profit in Chemical Trade

🎯 Remember the Mantra:

🔹 "Specific Components, Specific Codes."
🔹 "If it's a mixture, prove what's inside."
🔹 "Chapter 29 for Chemicals, Chapter 38 for Preparations."
🔹 "Missing Tax Data? Assume 25% and File a Pre-Ruling!"


📌 Pro Tip:
For 2933.99 and 2900.00, always request a Binding Tariff Information (BTI) ruling from the destination country's customs authority before shipping. The cost of a ruling is negligible compared to the cost of a 25% retroactive duty + storage fees.


📣 Immediate Action:

📞 Send your Chemical Composition Sheet to a Customs Broker TODAY.
🚀 Do not ship until the HS Code is confirmed.
💼 Your supply chain depends on this accuracy.


Professional Clearance Starts with Precise Classification!
💼 Every chemical detail counts!

用户评价

关于 HS 编码归类

协调制度(HS)是由世界海关组织(WCO)制定的国际贸易商品分类标准。全球 200 多个国家采用 HS 系统作为海关关税、贸易统计和进出口监管的基础。

每个 HS 编码遵循以下层级结构:

  • 章(2 位)——商品大类(例如:第 84 章:机器和机械设备)
  • 品目(4 位)——章内的更具体分类
  • 子目(6 位)——国际通用细分,所有 WCO 成员国统一使用
  • 本国细分(8-10 位)——各国自行扩展的细分编码,如美国 HTSUS 10 位编码

正确的 HS 编码归类对于顺利通关、准确缴纳关税和遵守贸易法规至关重要。错误归类可能导致海关延误、多缴关税或罚款。

CN进口到US时,适用的关税税率可能包括:

  • 最惠国(MFN)税率——适用于 WTO 成员国的标准关税税率
  • 普通税率——适用于无贸易协定国家
  • 贸易救济关税——附加关税,如 301 条款(反倾销)、232 条款(国家安全)或反补贴税

本页内容仅供参考。如需正式归类,请咨询当地海关或持牌报关代理。