Cyanides, cyanide oxides and complex cyanides
6 declarable lines
Heading 2837 covers cyanides, cyanide oxides and complex cyanides, which are inorganic salts built around the cyanide ion. The heading splits first by type: simple cyanides and cyanide oxides in 2837.11 and 2837.19, and complex cyanides in 2837.20. Within simple cyanides, sodium has its own line, while potassium, calcium and other cations fall under the residual subheadings.
Products in this heading
- Sodium cyanide for gold heap leaching and electroplating baths
- Potassium cyanide used in plating and metal treatment
- Calcium cyanide used in fumigation and mining
- Potassium ferricyanide (red prussiate of potash) for photographic and pigment use
- Sodium ferrocyanide and other ferrocyanide salts
- Cyanide oxides such as sodium cyanate sold as chemical intermediates
- Complex cyanide salts for electroplating baths
How to choose the right subheading
- Whether the compound is a simple cyanide or cyanide oxide (2837.11 and 2837.19) or a complex cyanide (2837.20).
- For simple cyanides, the metal cation: sodium has its own line in 2837.11.
- For other simple cyanides, whether the product is potassium cyanide, calcium cyanide or another cation in 2837.19.
- For complex cyanides, whether the product is potassium ferricyanide or another complex cyanide.
- The chemical identity as declared by the manufacturer, not the end use such as plating or mining.
Often confused with
- Heading 2811Hydrogen cyanide (hydrocyanic acid)
A separate inorganic acid of a nonmetal, not a metal cyanide salt.
- Heading 2827Sodium chloride (table or industrial salt)
A chloride, which is a different anion from cyanide.
- Heading 2815Potassium hydroxide (caustic potash)
A hydroxide, covered by the alkali hydroxide heading.
- Heading 2926Acetonitrile and other organic nitriles
Organic compounds with a nitrile function are outside chapter 28.
Frequently asked questions
What is the HTS code for sodium cyanide?
Sodium cyanide is classified under 2837.11.00.00. The general (MFN) rate for that line is Free.
What is the duty on potassium ferricyanide?
Potassium ferricyanide falls under 2837.20.10.00. The general (MFN) rate is 1.1%.
How do I classify potassium cyanide?
Potassium cyanide goes in the residual simple cyanide subheading at 2837.19.01.10. The general (MFN) rate for that line is Free.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.
All lines in heading 2837
- 2837.11.00.00Cyanides, cyanide oxides and complex cyanides / Cyanides and cyanide oxides / Of sodiumFree
- 2837.19.01.10Cyanides, cyanide oxides and complex cyanides / Cyanides and cyanide oxides / Potassium cyanideFree
- 2837.19.01.15Cyanides, cyanide oxides and complex cyanides / Cyanides and cyanide oxides / Calcium cyanideFree
- 2837.19.01.25Cyanides, cyanide oxides and complex cyanides / Cyanides and cyanide oxides / OtherFree
- 2837.20.10.00Cyanides, cyanide oxides and complex cyanides / Complex cyanides / Potassium ferricyanide1.1%
- 2837.20.51.00Cyanides, cyanide oxides and complex cyanides / Complex cyanides / Other1.7%