HS Code for Anhydrous ammonia

Anhydrous ammonia, a chemical compound with the formula NH₃, is classified under Harmonized System (HS) code 281410. This classification is precise because the HS subheading explicitly states "Ammonia; anhydrous." Anhydrous ammonia refers to ammonia in its pure, water-free state, typically encountered as a gas or a liquid under pressure. It is a fundamental inorganic chemical, widely used in various industrial processes, most notably in the production of fertilizers, as a refrigerant, and in the synthesis of other nitrogenous compounds. Its classification under this specific code reflects its distinct chemical identity as pure ammonia, without the presence of water.

Products Included

• Anhydrous ammonia (gaseous form)
• Anhydrous ammonia (liquid form, under pressure)

Common Misclassification

A common point of misclassification for anhydrous ammonia is with HS 281420, which covers "Ammonia in aqueous solution." The critical distinction between these two codes lies in the presence or absence of water. Anhydrous ammonia (281410) is pure ammonia without water, whereas ammonia in aqueous solution (281420), also known as ammonia water or ammonium hydroxide, is ammonia dissolved in water. Another potential area of confusion is with products classified under Chapter 31, "Mineral or chemical fertilisers, nitrogenous." While anhydrous ammonia is a primary raw material for nitrogenous fertilizers, when traded as the pure chemical compound, it remains under 281410. If it is part of a formulated fertilizer mixture or solution, it would then be classified under Chapter 31.

FAQ

What is the HS code for Anhydrous ammonia?

The HS code for Anhydrous ammonia is 281410. This code specifically designates ammonia in its pure, water-free form.

What is the key difference between anhydrous ammonia and aqueous ammonia for HS classification?

The key difference for HS classification is the presence of water. Anhydrous ammonia (281410) is pure ammonia without water. Aqueous ammonia (281420) is ammonia dissolved in water, forming a solution. This distinction is crucial for accurate classification.