Ultra-High Purity Sulfur Dioxide 99.999% Electronics
Ultra-high purity sulfur dioxide at 99.999% purity for semiconductor doping and plasma etching processes. This chemically pure inorganic oxygen compound of sulfur meets the Chapter 28 definition of a separate chemically defined compound. Supplied in specialized cleanroom cylinders for electronics manufacturing.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is hydrogen fluoride
Hydrogen fluoride is a separate inorganic acid with its own classification.
If the product is doped silicon or selenium for electronics
Doped chemical elements for electronics are classified under Chapter 38.
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 cylinders are certified for cleanroom use and meet semiconductor industry purity standards
• Provide the CBSA with the certificate of analysis showing 99.999% purity
• Verify that the product is not classified as a doped electronic element under Chapter 38
Related Products under Tariff item 2811.29.00
ACS Reagent Selenium Dioxide
ACS reagent grade selenium dioxide for high-precision analytical and research applications. It is a pure, chemically defined inorganic oxygen compound of the non-metal selenium, meeting Chapter 28 note 1 requirements.
Anhydrous Sulfur Dioxide for Wine Preservation
High-purity anhydrous sulfur dioxide gas used in winemaking to prevent oxidation and microbial growth. This chemically defined inorganic oxygen compound of sulfur meets the Chapter 28 criteria for separate chemical compounds, whether or not containing impurities. Supplied in pressurized containers for direct use in wine preservation.
Antimony Trioxide
Antimony trioxide (Sb₂O₃) used as a flame retardant in plastics and a catalyst in PET production. This fine white powder is an inorganic oxygen compound of the non-metal antimony, classified under Chapter 28. The product is a chemically defined compound in its pure form.
Arsenic Trioxide
Arsenic trioxide (As₂O₃), a white powder used in pharmaceuticals and glass production, is an inorganic oxygen compound of the non-metal arsenic. This chemically defined compound falls under Chapter 28 as an 'other' inorganic oxygen compound of non-metals. The product is supplied in pure form for various industrial applications.
Arsenic Trioxide Anhydrous Powder
Arsenic trioxide (As2O3) in anhydrous powder form, a white crystalline inorganic compound. It is a chemically defined inorganic oxygen compound of the non-metal arsenic, used primarily in industrial applications such as glass production and metallurgy.
Arsenic Trioxide Flake Form
Arsenic trioxide in dense flake form, used for easier handling in metallurgy and glass decolorizing processes. It is a chemically defined inorganic oxygen compound of the non-metal arsenic, falling under this tariff item.