Hydrogen Cyanide Gas (99% Purity)
Hydrogen cyanide gas at 99% purity, used primarily in chemical synthesis for producing adiponitrile and methionine. It is a separate chemically defined compound of hydrogen cyanide, classified under this tariff item as a simple cyanogen acid.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the gas is mixed with other gases or impurities that affect its chemical identity.
Other inorganic acids may apply if the product is not pure hydrogen cyanide.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify the gas is in its pure form without added substances that could change classification
• Ensure proper labeling and documentation for hazardous gases under Canadian regulations
• Coordinate with CBSA for any special import permits required for toxic substances
Related Products under Tariff item 2811.12.00
Anhydrous Hydrogen Cyanide (Industrial Grade)
Anhydrous hydrogen cyanide (HCN) in industrial grade, supplied as a liquid or gas for large-scale production of nylon precursors and pharmaceuticals. It is a separate chemically defined compound of carbon and nitrogen, classified under this tariff item as hydrogen cyanide (hydrocyanic acid).
HCN Laboratory Reagent Grade
Laboratory reagent grade hydrogen cyanide in stabilized ampoules for analytical chemistry and organic synthesis. It is a chemically defined compound of hydrogen cyanide, meeting the criteria for this tariff item as a separate inorganic acid.
High-Purity HCN for Adiponitrile Production
Ultra-pure hydrogen cyanide (99.9% purity) distilled for electrohydrodimerization to adiponitrile in nylon-6,6 manufacturing. It is a separate chemically defined compound of hydrogen cyanide, classified under this tariff item as a simple cyanogen acid.
Hydrocyanic Acid Aqueous Solution (10% HCN)
An aqueous solution of hydrogen cyanide stabilized at 10% concentration for safer handling in industrial fumigation and chemical processes. It is a solution of a chemically defined compound in water, covered by this tariff item as hydrogen cyanide.
Stabilized Hydrocyanic Acid for Fumigation (5% Solution)
Phosphine-stabilized 5% HCN aqueous solution packaged for agricultural fumigation of soil and structures. It is a solution of hydrogen cyanide in water with a stabilizer for safety, falling under this tariff item as hydrogen cyanide.