3104.20.00 - Potassium chloride

This HTS category, 3104.20.00, specifically covers potassium chloride, a vital chemical compound widely utilized as a fertilizer due to its high potassium content. Potassium chloride, also known as muriate of potash (MOP), is essential for plant growth, contributing to improved crop yield, quality, and disease resistance. Its classification under Chapter 31 highlights its primary function as a nutrient for agricultural purposes.

Within the broader context of "Mineral or chemical fertilizers, potassic," this subcategory distinguishes itself from its siblings, 3104.30.00 (potassium sulfate) and 3104.90.01 (other potassic fertilizers). While all fall under the umbrella of potassic fertilizers, 3104.20.00 exclusively pertains to potassium chloride, whereas potassium sulfate involves a different chemical composition and distinct agricultural properties.

The subcategories further refine the classification of potassium chloride based on its concentration of potassium oxide (K2O). 3104.20.00.10 applies to potassium chloride containing not more than 62 percent by weight of K2O, while 3104.20.00.50 is for those with a higher concentration, exceeding 62 percent K2O. This distinction is crucial for accurate duty assessment and compliance, reflecting variations in product purity and formulation that may influence trade.