2837.19.01
Other
Cyanides, cyanide oxides and complex cyanides: Cyanides and cyanide oxides
Data provenance: Rates from HTS Revision 16 (Aug 15, 2026); trade measures verified against CBP CSMS and Federal Register notices through Aug 15, 2026.
Duty rates
Column 1 (General / MFN)
Free
Column 2 (Non-NTR)
Free
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.90.08
35%
ActiveArticles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Applies to origin: RU, BY
Effective from April 5, 2025
Rate-change history
What the rate was before, and when it changed. The government schedule replaces each revision in place; we keep the timeline.
-
NEW_PROGRAM Executive Order Feb 1, 2026 — Reciprocal Tariff (FR 2026-03824)
Section 122 reciprocal surcharge in effect — additional 10% on most imports through July 24, 2026
See the change → -
Base rate HTS 2023
Column 1 general rate set to Free.
Related CBP rulings
The tariff classification of “Potassium Ferricyanide (III), CAS # 13746-66-2” from China
” In your submission, you describe the product at issue as a single chemically defined compound, intended to be used as a chemical reducer in photographic processing to remove silver from negatives and positives (dot etching). It is also us
The tariff classification of potassium copper cyanide CAS (14263-73-1) from Korea
Your descriptive literature states that you intend to import potassium copper cyanide. The technical data that you submitted was analyzed by our laboratory.
The tariff classification of Sodium Nitroprusside (CAS-13755-38-9) in bulk form, from Japan
The subject product, Sodium Nitroprusside is a pharmaceutical intermediate. It is generally used to immediately reduce blood pressure in patients who are experiencing an emergency hypertension.
The tariff classification of Tripotassium Hexacynocobaltate (CAS# 13963-58-1) from The Czech Republic
The tariff classification of Tripotassium Hexacynocobaltate (CAS# 13963-58-1) from The Czech Republic
The tariff classification of X-874, X-875, X-879, MK-9 and DF-102 from Japan
The applicable subheading for X-874 will be 2802.00.0000, Harmonized Tariff Schedule of the United States, (HTS), which provides for Sulfur, sublined or preciptated: colloidal sulfur. The rate of duty will be Free.
The tariff classification of Sorbent FEZHEL (ANFEZH) from Russian
The tariff classification of Sorbent FEZHEL (ANFEZH) from Russian
The tariff classification of Sodium Ferrocyanide (CAS# 13601-19-9) from Japan
You believe that the proper Schedule B number for sodium ferrocyanide is 2837.11.0000.
The tariff classification of Potassium Cobalt Hexacyanoferrate (CAS#12549-23-4) from Finland.
The tariff classification of Potassium Cobalt Hexacyanoferrate (CAS#12549-23-4) from Finland.
Other codes in heading 2837
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 2837.19.01 from each major US trading partner.
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