2530.20.20.00 - Epsom salts

This HTS category, 2530.20.20.00, specifically covers Epsom salts. Epsom salts, scientifically known as hydrated magnesium sulfate (MgSO₄·7H₂O), are a distinct mineral substance. They are typically found in a crystalline form and are recognized for their various industrial, agricultural, and medicinal applications, including use in baths for muscle relaxation, as fertilizers, and in chemical processes.

Within the broader classification of "Mineral substances not elsewhere specified or included," this code distinguishes Epsom salts from its sibling category, 2530.20.10.00, which covers Kieserite. While both are natural magnesium sulfates, Kieserite (magnesium sulfate monohydrate) is chemically different and often serves distinct industrial purposes. The key differentiator lies in the specific chemical hydration state and resulting physical properties that define Epsom salts.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, the classification at 2530.20.20.00 is definitive for natural magnesium sulfates meeting the established criteria for Epsom salts. Classification within this code relies on confirming the material's identity as hydrated magnesium sulfate, irrespective of its specific natural source or purity, provided it is not elsewhere specified by a more precise HTS provision.