2832.30.10.00 - Sodium thiosulfate

This HTS subheading specifically covers sodium thiosulfate. Sodium thiosulfate, also known as hyposulfite of soda, is an inorganic compound used in various industrial applications. Its primary uses include its role as a photographic fixer, a desensitizing agent in textiles and paper, and in water treatment as a dehalogenating agent. It is typically encountered in crystalline form, either anhydrous or as a pentahydrate.

Distinguishing this category from its sibling, 2832.30.50.00, is straightforward: 2832.30.10.00 is exclusively for sodium thiosulfate, whereas the sibling category is a residual "Other" classification encompassing all other thiosulfates not specifically enumerated elsewhere. Therefore, any thiosulfate that is not sodium thiosulfate would fall under the "Other" subheading.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification at this level is definitive based on the specific identification of the chemical compound as sodium thiosulfate. Practical classification relies on verifying the product's identity through chemical analysis, material safety data sheets (MSDS), or supplier declarations confirming it is indeed sodium thiosulfate.