HS Code for Alum

Alum, specifically referring to aluminium sulphate in a commercial and industrial context, is classified under HS code 2833.22. This code is part of Chapter 28, which encompasses inorganic chemicals and precious metal compounds. Heading 2833 is dedicated to sulphates, alums, and peroxosulphates. The subheading 2833.22 is the specific designation for sulphates of aluminium. This classification is based on the chemical composition of the substance, which is an inorganic salt produced by the reaction of sulphuric acid with an aluminium-bearing material like bauxite. It is widely used in water treatment as a coagulant and in the paper industry as a sizing agent. Because it is a defined chemical compound, it must be classified according to its molecular structure rather than its end-use application.

Products Included

• Aluminium sulphate (technical grade)
• Papermaker's alum
• Filter alum used in water purification
• Kibbled or ground aluminium sulphate
• Non-ferric aluminium sulphate

Common Misclassification

The most common misclassification occurs between 2833.22 and 2833.30. While 2833.22 is for simple aluminium sulphate, 2833.30 is reserved for "Alums," which in strict chemical terms are double sulphates (such as potassium aluminium sulphate). Importers often use the term "alum" generically for both, leading to errors. Additionally, if the alum is prepared as a medicament for retail sale (e.g., a styptic pencil), it may be moved to Chapter 30.

FAQ

What is the HS code for Alum?

The HS code for aluminium sulphate, commonly known as alum, is 2833.22.

Is potassium alum classified under this code?

No, potassium aluminium sulphate is classified under HS code 2833.30 as a double sulphate (alum).