HS Code for Zeolites

Zeolites are classified under HS code 2842.10, which covers double or complex silicates, including aluminosilicates, whether or not chemically defined. Zeolites are crystalline aluminosilicates characterized by a three-dimensional framework of tetrahedral SiO4 and AlO4. This classification is primarily used for synthetic zeolites or natural zeolites that have been significantly chemically modified for industrial use as ion-exchange agents, catalysts, or molecular sieves. Chapter 28 is dedicated to inorganic chemicals, and heading 2842 is the appropriate place for complex salts of inorganic acids. The classification depends on the chemical structure and the fact that these substances are often produced through controlled chemical synthesis to ensure specific pore sizes and surface areas required for industrial applications like water softening or petroleum refining.

Products Included

• Synthetic zeolite A, X, and Y types
• Molecular sieves (crystalline aluminosilicates)
• Chemically modified natural clinoptilolite
• Zeolite-based ion-exchange resins (inorganic)
• Aluminosilicate catalysts for fluid catalytic cracking

Common Misclassification

The most common misclassification for zeolites is HS code 2530.90, which covers mineral substances not elsewhere specified. Natural zeolites that are merely crushed, ground, or washed without chemical modification belong in Chapter 25. However, if the zeolite is synthetic or has undergone chemical treatment to alter its ion-exchange capacity, it must be moved to 2842.10. Another error is using HS code 3824.99 for prepared binders or chemical products. While zeolite-based mixtures might fall there, pure synthetic zeolites are more specifically described by the chemical heading in Chapter 28. Additionally, activated carbon (3802.10) is sometimes confused with zeolites due to similar filtering uses.

FAQ

What is the HS code for zeolites?

The HS code for synthetic or chemically defined zeolites is 2842.10.

Are natural zeolites classified under the same code?

Not usually; raw natural zeolites are typically classified under 2530.90, while 2842.10 is reserved for synthetic or chemically modified aluminosilicates.