Sodium Dithionite
> Sodium dithionite, also known as sodium hydrosulfite, is a white crystalline powder used as a reducing agent in textile bleaching and vat dyeing. It is a chemically defined inorganic compound and falls under tariff item 2831.90.00 as 'other' dithionites, since it is not specifically named in the subheading.
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 specifically sodium dithionite
Sodium dithionite is named in subheading 2831.10, not 'other'.
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 product is not mixed with organic stabilizers beyond what is necessary for preservation, as this could affect classification
• Provide a detailed product specification sheet to the CBSA to confirm it is not a retail preparation
• Check if anti-dusting agents are added; if so, they must not render it suitable for a specific use
Related Products under Tariff item 2831.90.00
Ammonium Dithionite Solution
> Ammonium dithionite in aqueous solution acts as a reducing bleach for textiles and paper. As a chemically defined inorganic compound of dithionite, it falls under tariff item 2831.90.00 for other dithionites and sulphoxylates. The aqueous solution is a normal method of putting up for safety and transport, consistent with Chapter 28 Note 1.
Potassium Dithionite
> Potassium dithionite is a strong reducing agent used in chemical synthesis and wastewater treatment. As a chemically defined inorganic salt of dithionite, it is classified under tariff item 2831.90.00 for other dithionites. It is not organically stabilized and meets Chapter 28 Note 1 criteria.
Sodium Formaldehyde Sulfoxylate
> Sodium formaldehyde sulfoxylate is a sulfoxylate reducing agent used in polymerizations and dye discharge printing. It is a chemically defined inorganic compound, and as a sulfoxylate it falls under tariff item 2831.90.00 for other dithionites and sulphoxylates. The product is not organically stabilized in a way that excludes it from Chapter 28.
Zinc Dithionite
> Zinc dithionite is an inorganic salt used in industrial reducing applications, particularly in pulp and paper bleaching. As a chemically defined dithionite, it falls under tariff item 2831.90.00 for other dithionites. It meets Chapter 28 Note 1 requirements as a separate chemical compound.