Zinc Telluride Crystals
Zinc telluride crystals are a semiconductor compound used in infrared detectors and thermoelectric devices. As a telluride salt of an inorganic base, it falls under tariff item 2842.90.00 for other salts of inorganic acids or peroxoacids. The crystals are imported in bulk form for further processing into electronic components.
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 |
PGA flags (2)Show detailsHide detailsCFIAAll ProgramsRequiredHCActive Pharmaceutical IngredientsMay be required
- CFIA
All Programs · Required
CANADIAN FOOD INSPECTION AGENCY: CFIA All Programs requires review / declaration data. CBSA's Single Window matching criteria match this classification number (Within Range 2842100000–2842900000).
- HC
Active Pharmaceutical Ingredients · May be required
May require HC Active Pharmaceutical Ingredients depending on intended use (HC13) and Canadian product category (HC01). Matching criteria: Starts With 2842. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the crystals are doped for use in electronics and in unworked forms
Chapter note 8 places doped chemical elements in Chapter 28 when unworked, but heading 28.53 covers other inorganic compounds not elsewhere specified.
If the crystals are cut into discs, wafers or similar forms for electronics
Chapter note 8 excludes such cut forms from Chapter 28 and directs them to heading 38.18 for doped semiconductor materials.
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
• Ensure the crystals are properly classified as a telluride salt and not as a doped semiconductor element, which would fall under heading 28.53 or 38.18
• Provide a certificate of analysis to confirm chemical purity and composition when clearing customs
• Verify whether the goods qualify for duty relief under the Chemicals and Plastics Duties Reduction or Removal Order
Related Products under Tariff item 2842.90.00
Aluminum Peroxophosphate
Aluminum peroxophosphate is an inorganic salt of peroxophosphoric acid, used in flame retardants. It is a salt of a peroxoacid, classifiable under heading 28.42 as 'other salts of inorganic acids or peroxoacids'.
Ammonium Peroxosulfate
Ammonium peroxosulfate ((NH4)2S2O8) is an oxidizing salt used in etching and polymerization. It is a salt of peroxosulfuric acid, classifiable under heading 28.42 as an 'other salt of a peroxoacid'.
Ammonium Thiocyanate
Ammonium thiocyanate (NH4SCN) is an inorganic salt of thiocyanic acid, commonly used in fertilizers, photography, and steel pickling. It is a chemically defined compound of an inorganic base, classifiable under heading 28.42 as a thiocyanate.
Antimony Selenide Nanoparticles
Antimony selenide nanoparticles are used in thin-film photovoltaics and battery research, with particle sizes under 100 nm for enhanced electronic properties. As a metal selenide, it is a chemically defined inorganic salt of an inorganic base, classified under tariff item 2842.90.00.
Barium Thiocyanate
Barium thiocyanate (Ba(SCN)2) is an inorganic salt used as a corrosion inhibitor and in textile processing. It is a chemically defined thiocyanate of an inorganic base, falling under heading 28.42.
Bismuth Telluride Powder
Bismuth telluride powder is a thermoelectric material used in Peltier coolers and power generators, imported as a fine powder for further processing. As a telluride of an inorganic base, it is a chemically defined salt classified under tariff item 2842.90.00.