2832.30.10.00/Sodium Thiosulfate Pentahydrate Crystals/Mexico

Sodium Thiosulfate Pentahydrate Crystals from Mexico

Sodium thiosulfate pentahydrate (Na2S2O3·5H2O) is a colorless crystalline compound used primarily in photography as a fixer to remove unexposed silver halides from film. It falls under HTS 2832.30.10.00 as it is specifically the sodium salt of thiosulfuric acid, classified among thiosulfates in Chapter 28 for chemically defined inorganic compounds.

Duty Rate — Mexico → United States

11.5%

Rate breakdown

9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter

Calculate with your customs value Verify with the Tariff Assistant

Import Tips

• Verify purity and hydration state (e.g

• pentahydrate) via Certificate of Analysis to confirm classification under 2832.30.10.00 and avoid reclassification as anhydrous

• Include Safety Data Sheet (SDS) and proper UN packaging certification for Hazard Class 8 (corrosive) to prevent customs delays

• Label shipments clearly as 'Sodium Thiosulfate' to match HTS description; impure blends may shift to 2842 for complex salts