Zinc Formaldehyde Sulfoxylate
> Zinc Formaldehyde Sulfoxylate is a sulfoxylate derivative that contains zinc, but the candidate description incorrectly states it is a sulfoxylate of sodium. As a zinc compound, it does not fall under tariff item 2831.10.00, which is specific to sodium dithionites and sulphoxylates. Therefore, it is not classified under this tariff item.
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 a complex salt of zinc
Complex salts of inorganic bases are classified in heading 28.42 per Chapter 28 Note 5.
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
• > This product is not classifiable under 2831.10.00 because it is not a sodium salt
• Consider classification under heading 28.42 for complex salts or other headings for zinc compounds
• Verify the exact chemical composition with a laboratory analysis
Related Products under Tariff item 2831.10.00
Industrial Sodium Hydrosulfite Substitute Rongalite
> Industrial Sodium Hydrosulfite Substitute Rongalite is a stable, free-flowing powder of sodium formaldehyde sulfoxylate, used as a reducing agent in bleaching and dechlorination processes for pulp and textiles. It is a separate chemically defined inorganic compound of sodium, meeting the scope of Chapter 28 Note 1(a). It falls under tariff item 2831.10.00 as a sulphoxylate of sodium.
Rongalite C Technical Grade
> Rongalite C Technical Grade is a commercial form of sodium formaldehyde sulfoxylate, supplied as a white, free-flowing powder for industrial vat dyeing. As a chemically defined sodium sulphoxylate, it is classified under tariff item 2831.10.00. The technical grade does not alter its identity as a separate compound.
Sodium Dithionite 88% Technical Grade
> Sodium Dithionite 88% Technical Grade is sodium dithionite (Na2S2O4), also known as sodium hydrosulfite, in powder form for industrial textile bleaching and vat dyeing. It is a separate chemically defined inorganic compound of sodium, meeting Chapter 28 Note 1(a). It is classified under tariff item 2831.10.00 as a dithionite of sodium.
Sodium Dithionite Flakes Industrial
> Sodium Dithionite Flakes Industrial is a flaked form of sodium dithionite for easier handling in wastewater treatment and food processing decolorization. As a chemically defined sodium dithionite, it is classified under tariff item 2831.10.00. The flake form does not affect its classification as a separate compound.
Sodium Dithionite for Dyeing 90% Min
> Sodium Dithionite for Dyeing 90% Min is a high-purity sodium dithionite with a minimum 90% assay, used for indigo dyeing in denim production. It is a separate chemically defined compound of sodium, meeting Chapter 28 Note 1(a). It falls under tariff item 2831.10.00 as a dithionite of sodium.
Sodium Formaldehyde Sulfoxylate 99% Pure Crystals
> Sodium Formaldehyde Sulfoxylate 99% Pure Crystals is a high-purity crystalline compound used in chemical synthesis and as a bleaching assistant in paper manufacturing. It is a separate chemically defined compound of sodium, satisfying Chapter 28 Note 1(a). It is correctly classified under tariff item 2831.10.00 as a sulphoxylate of sodium.