Zinc Thiosulfate Hydrate

Zinc thiosulfate hydrate (ZnS2O3·H2O) functions as a corrosion inhibitor in cooling water systems and in photographic developers. It is an 'other' thiosulfate under HTS 2832.30.5000.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.1%+35.0%38.1%
🇲🇽Mexico3.1%+10.0%13.1%
🇨🇦Canada3.1%+10.0%13.1%
🇩🇪Germany3.1%+10.0%13.1%
🇯🇵Japan3.1%+10.0%13.1%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2833.27.00.00Lower: 25.6% vs 38.1%

If zinc sulfites

Other sulfites including zinc in 2833.27.

3824.99Lower: 15% vs 38.1%

If water treatment formulation

Prepared mixtures for specific uses exclude from pure compounds.

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Import Tips & Compliance

Certify zinc levels for RoHS compliance; avoid plastic bags (use fiber drums); declare as non-hazardous if diluted

Related Products under HTS 2832.30.50.00

Sodium Thiosulfate Pentahydrate

Sodium thiosulfate pentahydrate (Na2S2O3·5H2O) is a colorless crystalline compound used in photography as a fixer to remove unexposed silver halides and in water treatment to neutralize chlorine. It falls under HTS 2832.30.5000 as it is a thiosulfate of an inorganic base, classified as 'other' thiosulfates not specified elsewhere in the subheading.

Ammonium Thiosulfate Solution

Ammonium thiosulfate ((NH4)2S2O3) in aqueous solution is widely used as a fertilizer additive providing sulfur and nitrogen to crops and in leaching processes for gold extraction. It is classified under HTS 2832.30.5000 as an ammonium thiosulfate, fitting 'other' thiosulfates per Chapter 28 notes on salts.

Potassium Thiosulfate Crystals

Potassium thiosulfate (K2S2O3) crystals serve as a reagent in analytical chemistry labs and in dechlorination processes for aquaculture. This chemically defined thiosulfate of potassium is covered by HTS 2832.30.5000 under 'other' thiosulfates.

Calcium Thiosulfate Powder

Calcium thiosulfate (CaS2O3) powder is utilized in the rubber industry as an accelerator and in wastewater treatment to precipitate heavy metals. Classified in HTS 2832.30.5000 as 'other' thiosulfates of inorganic bases.

Barium Thiosulfate Anhydrous

Barium thiosulfate (BaS2O3) anhydrous is a specialty chemical used in pyrotechnics for colored flame effects and as a reagent in qualitative analysis. It qualifies under HTS 2832.30.5000 for other thiosulfates.

Magnesium Thiosulfate Solution 30%

30% magnesium thiosulfate solution (MgS2O3) is applied in agriculture for soil amendment and in textile dyeing as an anti-chlor agent. HTS 2832.30.5000 covers this as other thiosulfates.