HS Code for Perlite

Perlite is classified under HS code 2530.10. This code is situated within Chapter 25, which encompasses salt, sulfur, earths and stone, plastering materials, lime, and cement. Heading 2530 is a residual category for mineral substances not elsewhere specified or included. Subheading 2530.10 specifically identifies vermiculite, perlite, and chlorites in their unexpanded form. The classification depends heavily on the physical state of the mineral. Unexpanded perlite is a naturally occurring volcanic glass that has a high water content. It is typically mined and crushed but has not yet undergone the thermal expansion process that turns it into the lightweight, white material commonly used in gardening and construction. Because it is a raw mineral product that has not been significantly processed beyond crushing or grading, it remains in Chapter 25. The Harmonized System distinguishes between raw minerals and those that have been chemically altered or physically transformed by heat. As long as the perlite remains in its natural, unexpanded state, it is classified here. This classification is essential for mining companies and raw material suppliers who export the ore for processing in other countries.

Products Included

• Raw perlite ore
• Crushed unexpanded perlite
• Graded perlite rock
• Unprocessed volcanic glass (perlite variety)
• Perlite screenings in natural state

Common Misclassification

The most common misclassification for perlite is HS code 6806.20. This code is for exfoliated vermiculite, expanded clays, foamed slag, and similar expanded mineral materials. Once perlite is heated and expanded, it moves from Chapter 25 to Chapter 68. Importers often confuse the two, but the distinction is based on whether the material has undergone the expansion process. Additionally, perlite is sometimes confused with HS code 2508.40 (other clays), but perlite is a volcanic glass, not a clay mineral, and is specifically named in 2530.10.

FAQ

What is the HS code for Perlite?

The HS code for unexpanded perlite is 2530.10. If the perlite has been expanded, the code changes to 6806.20.

Does this code include perlite mixed with fertilizer?

No, mixtures of perlite and fertilizer are generally classified under Chapter 31 (Fertilizers) or as prepared horticultural growing media under HS code 3824.99.