2836.40.20.00 - Potassium hydrogencarbonate (Potassium bicarbonate)

HTS Code 2836.40.20.00 specifically classifies potassium hydrogencarbonate, also known as potassium bicarbonate. This inorganic compound is characterized by its chemical formula KHCO₃ and is typically found as a white crystalline powder or granules. It finds various industrial applications, including as a food additive (leavening agent), in pharmaceuticals, and as a buffering agent in chemical processes.

This classification is distinguished from its sibling category, 2836.40.10.00, which covers dipotassium carbonate (K₂CO₃). The primary difference lies in the chemical composition and structure; potassium bicarbonate contains one potassium atom, one hydrogen atom, and three oxygen atoms along with one carbon atom, whereas dipotassium carbonate contains two potassium atoms and one carbon atom with three oxygen atoms. This difference in molecular structure dictates distinct chemical properties and uses.

As a leaf node, HTS Code 2836.40.20.00 does not have further subdivisions. Therefore, the classification rests solely on the accurate identification of the imported product as potassium hydrogencarbonate, distinct from other potassium carbonate forms. The physical state and intended use are key factors in confirming its placement within this specific subheading.