HS Code for MOP fertilizer

Muriate of Potash (MOP), chemically known as potassium chloride, is classified under HS code 3104.20. This classification falls within Chapter 31, which covers fertilizers. The code 3104.20 specifically identifies potassium chloride as a mineral or chemical potassic fertilizer. Classification is driven by the chemical purity and the intended use of the product as a soil nutrient. Even if the potassium chloride is of high purity for industrial use, it remains under 3104.20 unless it is presented in specific forms like tablets or small packages, which might move it to 3105. The Harmonized System prioritizes the chemical identity of potassic salts within this heading, provided they are not specifically excluded by the chapter notes.

Products Included

• Granular Muriate of Potash (60% K2O)
• Standard/Powder MOP for direct application
• Soluble grade potassium chloride for fertigation
• Red MOP (containing iron oxide traces)
• White MOP (refined potassium chloride)

Common Misclassification

MOP is often confused with Potassium Sulfate, which is classified under HS code 3104.30. While both are potassic fertilizers, the sulfate variant is chloride-free and used for sensitive crops. Another common misclassification occurs with HS code 3105.20, which is for NPK compound fertilizers. MOP is a straight fertilizer containing only one primary nutrient (potassium), whereas 3105 is for mixtures containing two or three fertilizing elements. Additionally, pure potassium chloride in the form of cultured crystals (other than optical elements) weighing not less than 2.5g each is classified under 3824.

FAQ

What is the HS code for MOP fertilizer?

The HS code for Muriate of Potash (potassium chloride) fertilizer is 3104.20.

Does the color of MOP affect its HS code?

No, both Red MOP and White MOP are classified under 3104.20, as the color difference is usually due to trace minerals or refining processes that do not change the primary chemical identity.