Calcium Thiosulfate Powder
Calcium thiosulfate (CaS2O3) powder, used in rubber processing and wastewater treatment. It is a chemically defined thiosulfate of calcium, classifiable under this tariff item as a thiosulphate.
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 product is calcium sulphite instead
Calcium sulphite is a separate compound under sulphites.
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 powder is pure calcium thiosulfate with no organic additives
• Provide the chemical composition and purity certificate
• If used in wastewater treatment, check if it is a formulated product that could fall under Chapter 38
Related Products under Tariff item 2832.30.00
Ammonium Thiosulfate Solution
Ammonium thiosulfate ((NH4)2S2O3) in aqueous solution, used as a fertilizer additive and in gold leaching. It is a chemically defined thiosulfate of ammonium, classifiable under this tariff item as a thiosulphate.
Anhydrous Sodium Thiosulfate Powder
Anhydrous sodium thiosulfate (Na2S2O3) in white powder form, a separate chemically defined compound of sodium. It is used in gold extraction and as a dechlorinator in water treatment, and qualifies under tariff item 2832.30.00 as a thiosulphate.
Aquarium Dechlorinator Sodium Thiosulfate
Concentrated sodium thiosulfate solution crystals for aquarium dechlorination, consisting of the pure sodium thiosulfate salt. Despite its retail purpose, it remains a chemically defined thiosulfate of sodium, classifiable under this tariff item.
Barium Thiosulfate Anhydrous
Barium thiosulfate (BaS2O3) anhydrous, a specialty chemical for pyrotechnics and analytical reagent use. It is a chemically defined thiosulfate of barium, falling under this tariff item as a thiosulphate.
Gold Mining Sodium Thiosulfate Extractant
Technical grade sodium thiosulfate used as a lixiviant in gold leaching processes, a chemically defined compound of sodium. Its industrial application does not alter its classification as a thiosulphate under this tariff item.
Industrial Grade Sodium Thiosulfate Flakes
Sodium thiosulfate flakes for industrial applications such as paper bleaching and leather tanning, acting as an antichlor agent. It is a chemically defined sodium thiosulfate, falling under this tariff item as a thiosulphate.