HTS Code 282510: Hydrazine and hydroxylamine and their inorganic salts — 2026 US Tariff Rates
Data sourced from USITC 2026 Harmonized Tariff Schedule · Last verified May 31, 2026
Quick Answer
HTS 282510 = Hydrazine and hydroxylamine and their inorganic salts
Duty rate: 3.7% · Unit: 28-digit · Column 1: 3.7%
About This HTS Subheading
This 6-digit Harmonized Tariff Schedule subheading (282510) covers hydrazine and hydroxylamine and their inorganic salts. The table below lists all 8-digit and 10-digit statistical suffixes under this subheading, including General, Special (Free Trade Agreement), and Column 2 duty rates. Data is sourced from the official USITC 2026 Harmonized Tariff Schedule Revision 9. Always verify final classifications and duty rates with US Customs and Border Protection (CBP) before importing.
Complete Classification Table
All 8-digit and 10-digit tariff codes under HTS subheading 282510. Use this table to find the correct statistical suffix and applicable duty rate for your product.
| HTS Code | Full Description | General Rate | Special Rate | Column 2 Rate |
|---|---|---|---|---|
2825.10.00.00 |
Hydrazine and hydroxylamine and their inorganic salts | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
Duty Estimator
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Quick Answer: HTS 282510 Duty Rates
HTS subheading 282510 (hydrazine and hydroxylamine and their inorganic salts) contains 1 sub-classification.
Suffix 2825.10.00.00: General rate 3.7%, Special (FTA): Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG).
Always verify with CBP — Section 301, Section 232, and ADD/CVD may apply.
What Importers Need to Know About HTS Chapter 28
This subheading falls under an HTS chapter covering inorganic chemicals including elements, oxides, acids, salts, hydroxides, and rare earth compounds. Importers of these products should be aware of the following trade compliance considerations:
Chemical imports are subject to TSCA (Toxic Substances Control Act) administered by EPA. Verify TSCA Inventory status before importing. Certain inorganic chemicals may also be subject to DEA regulation.
For the specific subheading HTS 282510, we recommend you:
- Verify the correct 10-digit statistical suffix — even within a 6-digit subheading, duty rates can differ significantly between suffixes
- Check FTA eligibility — if your product qualifies for preferential treatment under USMCA, KORUS, or another FTA, you may reduce or eliminate duties by providing the required origin certification
- Monitor for trade remedy changes — Section 301, Section 232, and anti-dumping duties are updated periodically. A rate that was correct last quarter may have changed
- Consult CBP resources — for binding classification rulings, CBP's National Commodity Specialist Division provides written determinations
Frequently Asked Questions About HTS 282510
What is the import duty rate for products under HTS 282510?
Duty rates for HTS 282510 vary by the specific 8- or 10-digit statistical suffix and the country of origin. Suffix 2825.10.00.00 has a General rate of 3.7% with Special (FTA) rates available: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG). Always verify the exact duty rate with US Customs and Border Protection before importing, as rates may change and additional trade remedies (Section 301, Section 232, anti-dumping) may apply depending on the country of origin.
Can I get duty-free treatment for goods classified under HTS 282510?
While the General rate for this heading is not zero, many products qualify for duty-free or reduced-rate treatment under Free Trade Agreements (USMCA, KORUS, and others) if they meet the applicable rules of origin. Check the Special rate column for your specific country of origin. You must provide origin certification to claim FTA preferences.
How do I know if I am using the correct HTS classification?
The correct HTS classification depends on the specific product's composition, function, and in some cases its country of origin. For binding certainty, you can request a written ruling from CBP's National Commodity Specialist Division. Misclassification can result in retroactive duties, penalties under 19 USC §1592, and interest on underpaid amounts. For products classified under heading 282510, the key classification factors include the General Rules of Interpretation (GRI), Section Notes, and Chapter Notes. When in doubt, consult a licensed customs broker.
HTS Chapter 28 Classification Guide: Inorganic Chemicals
Chapter 28 covers inorganic chemicals including chemical elements, oxides, acids, salts, hydroxides, and rare earth compounds. Classification depends on the chemical composition and whether the product is a separate chemically defined compound or a mixture. Isotopes and rare earth compounds have specific subheadings.
Common Misclassification Errors
- Classifying organic compounds under Chapter 28 — organic chemicals belong in Chapter 29, and the distinction between organic and inorganic is critical for correct classification
- Confusing mixtures with chemically defined compounds — mixtures and solutions have separate subheadings or may fall under Chapter 38
- Failing to check TSCA (EPA) requirements — many inorganic chemicals require TSCA Inventory verification before importation
Duty Calculation Tips for HTS 282510
Many inorganic chemicals enter at low MFN rates or duty-free. Rare earth compounds and strategic materials may face export controls from source countries. TSCA (Toxic Substances Control Act) verification is required for most industrial chemicals. Section 301 List 2 (25%) applies to many Chinese-origin inorganic chemicals. Check DEA scheduling for precursor chemicals.
Chapter 28 Frequently Asked Questions
What is TSCA and how does it affect chemical imports?
The Toxic Substances Control Act (TSCA), administered by EPA, requires that all chemical substances imported into the US be listed on the TSCA Inventory or qualify for an exemption. Importers must certify TSCA compliance at entry. Importing chemicals not on the TSCA Inventory without EPA review is prohibited.
Are rare earth elements subject to export controls?
Rare earth elements and compounds themselves are not generally subject to US export controls, but China (the dominant producer) imposes export restrictions and quotas on many rare earth products. For US importers, sourcing diversification is a key supply chain strategy. Check BIS regulations for dual-use applications.
How do I distinguish between organic and inorganic chemicals for HTS classification?
Inorganic chemicals (Chapter 28) are compounds that do not contain carbon-carbon bonds, with exceptions for carbonates, cyanides, carbides, and certain other carbon-containing compounds classified as inorganic. Organic chemicals (Chapter 29) contain carbon-carbon or carbon-hydrogen bonds. When in doubt, consult a chemist or customs broker.
Do Chinese inorganic chemicals face Section 301 tariffs?
Yes. Many Chinese-origin inorganic chemicals face Section 301 List 2 additional duties of 25% on top of the regular MFN duty. This includes many acids, salts, and oxides used in industrial manufacturing. Check the specific HTS subheading against USTR's tariff lists.
Are there DEA requirements for importing chemical precursors?
Yes. The DEA regulates import of listed chemicals (precursor chemicals) that can be used to manufacture controlled substances. Importers must register with DEA, file import declarations, and comply with record-keeping requirements. Common regulated precursors include certain acids, solvents, and potassium permanganate.
This HTS classification data is programmatically parsed from the official 2026 US International Trade Commission (USITC) Harmonized Tariff Schedule Revision 9. The PoliteDraft data engine aggregates 8-digit and 10-digit statistical suffixes under their 6-digit subheading parents to create comprehensive, data-rich reference pages. Our editorial team reviews data parsing accuracy against the official USITC source files. This database is provided for informational and preliminary research purposes only. PoliteDraft is not a licensed customs broker or legal advisor.
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