Rubber Additive TTD Powder
CN โ US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824992500 | 41.5% | CN | US | Official Doc |
| 3824992600 | 35.0% | CN | US | Official Doc |
| 3824991100 | 35.0% | CN | US | Official Doc |
| 3824405000 | 40.0% | CN | US | Official Doc |
| 3824992500 | 41.5% | CN | US | Official Doc |
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AI Analysis
๐งช Rubber Additive TTD Powder & Paste (Thiuram Tetrasulfide)
๐ HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
๐ I. Product Definition & Classification: Do You Really Understand "TTD"?
Thiuram Tetrasulfide (TTD) is a critical accelerator and activator used in the rubber industry, particularly for natural rubber and synthetic rubber compounds. It is known for its fast curing properties and ability to improve tensile strength.
In international trade, TTD is categorized based on its physical state (Powder vs. Paste/Paste-like) and its chemical composition. The classification logic falls under Chapter 38: Miscellaneous Chemical Products.
โ ๏ธ Key Distinction Point:
- Powder Form: Typically classified under 3824.99.25.00 as a "Chemical Product" with a higher base tariff (6.5%).
- Paste/Gel Form: Classified under 3824.99.26.00 or 3824.99.11.00 as a "Chemical Preparation/Mixture" with 0% base tariff.
- Note: The "Paste" forms are often considered mixtures/preparations, while "Powder" is often treated as a distinct chemical product or additive.
๐ฆ II. HS Code Classification Details (2026 Latest Tariff Authority Reference)
| HS Code | Product Description | Physical State | Applicable Scenario |
|---|---|---|---|
3824.99.25.00 |
Rubber Additive TTD Powder form; falls under chemical products category | Powder | Standard dry rubber accelerator; fits the "other chemical products" fallback logic. |
3824.99.26.00 |
Rubber Additive TTD Paste form; falls under chemical preparations category | Paste/Gel | Fits the description of chemical products and preparations. |
3824.99.11.00 |
Rubber Additive TTD Ointment/Paste form; falls under unlisted chemical products | Ointment/Paste | Fits the "unlisted chemical products and preparations" fallback category for chemical industry-related products. |
3824.40.50.00 |
Rubber Additive TTD Ointment form; classified as chemical preparation | Ointment/Paste | Fits the description of "other chemical industry preparations" under miscellaneous categories. |
๐ Key Warning:
- Powder (3824.99.25.00) has a 6.5% base tariff, whereas Paste Forms (3824.99.26.00 / 3824.99.11.00) have a 0.0% base tariff.
- However, ALL forms are subject to significant additional tariffs (Section 301 + Section 122/IEEPA).
- 3824.40.50.00 is less common for TTD but listed as an alternative for ointment forms, carrying a 5% base tariff.
๐ฐ III. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes, Policy Surcharges)
โ Applicable Country: United States (US)
โ Origin: China (CN)
โ Effective Time: Current trade policies (Section 301 & IEEPA)
๐ฏ 1. 3824.99.25.00 โโ Rubber Additive TTD Powder
| Item | Detail |
|---|---|
| Base Tariff | 6.5% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| Section 122 / IEEPA Tariff | +10.0% |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value ร 41.5% |
| De Minimis Exemption Eligibility | โ Not Eligible (Denied under current trade rules for Chinese chemical additives) |
| Legal Basis Path | USITC:3824.99.25.00 โ FOOTNOTE:301 โ IEEPA:122/Section 301 |
๐ Explanation:
- The 6.5% base rate is specific to this subheading for chemical products.
- 25% Section 301 is the standard additional tariff on many Chinese chemical inputs.
- 10% Section 122/IEEPA applies to specific strategic or emergency goods from China.
- Total 41.5% makes this a high-cost import item.
๐ฏ 2. 3824.99.26.00 โโ Rubber Additive TTD Paste
| Item | Detail |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| Section 122 / IEEPA Tariff | +10.0% |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value ร 35.0% |
| De Minimis Exemption Eligibility | โ Not Eligible |
| Legal Basis Path | USITC:3824.99.26.00 โ FOOTNOTE:301 โ IEEPA:122/Section 301 |
๐ Explanation:
- The 0% base rate is for chemical preparations/mixtures.
- Despite the lower base, the 25% + 10% surcharges bring the total to 35%, which is still significant but lower than the powder form.
๐ฏ 3. 3824.99.11.00 โโ Rubber Additive TTD Ointment/Paste
| Item | Detail |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| Section 122 / IEEPA Tariff | +10.0% |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value ร 35.0% |
| De Minimis Exemption Eligibility | โ Not Eligible |
| Legal Basis Path | USITC:3824.99.11.00 โ FOOTNOTE:301 โ IEEPA:122/Section 301 |
๐ Explanation:
- Similar to3824.99.26.00, this falls under "unlisted chemical products" with 0% base.
- Total 35% applies.
๐ฏ 4. 3824.40.50.00 โโ Rubber Additive TTD Ointment (Alternative)
| Item | Detail |
|---|---|
| Base Tariff | 5.0% (ad valorem) |
| Section 301 Additional Tariff | +25.0% |
| Section 122 / IEEPA Tariff | +10.0% |
| Total Tax Rate | 40.0% |
| Tax Calculation | CIF Value ร 40.0% |
| De Minimis Exemption Eligibility | โ Not Eligible |
| Legal Basis Path | USITC:3824.40.50.00 โ FOOTNOTE:301 โ IEEPA:122/Section 301 |
๐ Explanation:
- This is a less common classification for TTD but listed for ointment forms under "other chemical industry preparations."
- Total 40% is higher than the paste forms (35%) but lower than the powder form (41.5%).
๐ ๏ธ IV. Customs Clearance Practical Advice (ๅฎๆ้ฟๅๆๅ)
โ 1. Preparation Checklist (All Required)
| Material | Mandatory | Description |
|---|---|---|
| โ Product Specification Sheet | โ๏ธ | Must specify chemical name (Thiuram Tetrasulfide), CAS number, and physical state (Powder/Paste). |
| โ Safety Data Sheet (SDS) | โ๏ธ | Essential for chemical clearance. Must classify under HS Code 3824. |
| โ Product Photos (Packaging & Label) | โ๏ธ | Clear view of label stating "Rubber Accelerator TTD" and state. |
| โ Commercial Invoice | โ๏ธ | Clearly state "Rubber Additive TTD" and avoid vague terms like "Chemical Mix" without detail. |
| โ Packing List | โ๏ธ | Detail net/gross weight, critical for duty calculation. |
| โ Origin Certificate | โ๏ธ | Proof of China origin is standard; no preferential tariff applies for US imports from China. |
โ 2. Declaration Tips (Critical Mantra)
๐ฅ โState the Form, Specify the CAS, Avoid Ambiguity!โ
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Powder TTD | 3824.99.25.00 - "Rubber Accelerator TTD (Thiuram Tetrasulfide), Powder, CAS 137-77-9" |
Generic "Chemical Powder" โ Risk of reclassification & penalties. |
| Paste TTD | 3824.99.26.00 - "Rubber Accelerator TTD Paste, Chemical Preparation" |
Calling it "Chemical Product" โ May trigger higher base tariff if misclassified. |
| Ointment TTD | 3824.99.11.00 or 3824.40.50.00 - Specify "Ointment" clearly |
Calling it "Paste" inconsistently โ Customs may doubt classification. |
| Mixtures | If TTD is mixed with other agents, declare as Chemical Preparation (0% base) | Declaring pure chemical state when it's a mixture โ Misdeclaration. |
โ 3. Special Cases Handling
| Scenario | Handling Advice |
|---|---|
| TTD in Bulk vs. Packaged | Both are subject to the same HS Code and tariffs. Ensure packaging weight is declared accurately. |
| Import for Industrial Use Only | Provide end-use statement if required by specific chemical regulations, but duty rate remains the same. |
| Misclassification Risk | If you declare Powder as Paste to save 6.5% base tariff, but itโs actually powder, severe penalties apply. Always verify physical state. |
| Sample Shipments | Even samples are subject to the 41.5% / 35% rates. De minimis ($800) is not available for Chinese chemical additives. |
๐ V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Base Tariff | Additional Tariffs (China) | Total Estimated Rate | Notes |
|---|---|---|---|---|---|
| ๐บ๐ธ USA | 3824.99.25.00 (Powder) |
6.5% | +35% (301+122) | 41.5% | High barrier; precise state declaration needed. |
| ๐จ๐ณ China (Import) | 2929.90.90 (Est.) |
6.5% | None | 6.5% | TTD is often imported as a chemical intermediate. |
| ๐ช๐บ EU | 3824.99.91 |
0% - 4% | None | ~4% | Lower overall cost; no US-style surcharges. |
| ๐ฌ๐ง UK | 3824.99.99 |
0% - 4% | None | ~4% | Post-Brexit, similar to EU. |
| ๐ฎ๐ณ India | 3824.99.99 |
7.5% - 10% | Possible Anti-Dumping | ~15%+ | Check for anti-dumping duties on rubber accelerators. |
๐ Conclusion:
- USA has the highest effective tariff for TTD imports from China due to Section 301 and IEEPA.
- EU and UK offer significantly lower duty rates, but non-tariff barriers (REACH, CLP) apply.
- Strategic Advice: For US market, consider supply chain diversification (e.g., sourcing from Vietnam or Thailand if possible) to avoid the 35%+ surcharges.
๐ VI. Common Errors & Pitfalls (Blood Lessons)
โ Error 1: Declaring Powder TTD as Paste to save the 6.5% base tariff.
๐ Consequence: Customs inspection reveals powder โ Back taxes + 25% penalty + seizure risk.
โ Error 2: Vague description "Rubber Chemical" without CAS number or physical state.
๐ Consequence: Customs delay, potential reclassification to a higher tax code, demurrage fees.
โ Error 3: Ignoring the 10% IEEPA/Section 122 tariff.
๐ Consequence: Underpayment of duties โ Compliance audit and fines.
โ Error 4: Assuming De Minimis ($800) applies to small shipments.
๐ Consequence: ALL Chinese chemical imports are subject to full duty. No exemption.
โ Correct Practice:
"Thiuram Tetrasulfide (TTD) Rubber Accelerator, Powder, CAS 137-77-9, HS Code 3824.99.25.00, Origin: China, CIF Value: $X, Duty: 41.5%"
๐ฏ VII. Conclusion: Precision in Classification, Savings in Cost
๐ฏ Remember the Mantra:
๐น "Powder is 41.5%, Paste is 35%, State Matters!"
๐น "CAS Number + Physical State = Clear Customs!"
๐น "No De Minimis for Chemicals from China โ Pay Full Duty!"
๐ Pro Tip:
If you are importing large volumes, consider applying for an Exclusion under Section 301 if your specific TTD product is on the exclusion list (rare for basic additives, but worth checking).
Always consult a licensed customs broker to verify the current status of HS Code 3824.99.25.00 and 3824.99.26.00 classifications.
๐ฃ Immediate Action:
๐ Contact a Customs Broker + Provide SDS + Verify Physical State
๐ Ensure Accurate Declaration โ Avoid Delays & Penalties
โจ Professional Clearance Starts with Precise Classification!
๐ผ Your Every Dollar of Duty is Worth Calculating!
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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) โ Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) โ More specific grouping within the chapter
- Subheading (6 digits) โ Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) โ 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 โ The standard duty rate applied to WTO members
- General rate โ Applied to countries without trade agreements
- Trade remedy duties โ 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.