HS Code for Dinas earth

Dinas earth is classified under HS code 2508.70. This classification falls within Chapter 25, which covers salt, sulfur, earths, and stone, as well as plastering materials, lime, and cement. Heading 2508 is the general category for "Other clays," excluding expanded clays of heading 6806. Subheading 2508.70 specifically covers chamotte or dinas earths. Dinas earth is a highly refractory material characterized by its exceptionally high silica content (often exceeding 95%). It is primarily used in the manufacture of refractory bricks and linings for high-temperature industrial furnaces, such as those used in steel and glass production. The classification is based on the mineralogical nature of the earth as a refractory clay and its state as a raw or calcined material that has not yet been manufactured into finished articles.

Products Included

• Raw dinas earth
• Calcined dinas earth
• High-silica refractory clay
• Dinas clay for furnace linings
• Crushed or ground dinas earth

Common Misclassification

Dinas earth is often misclassified under 2507.00, which is reserved for kaolin and other kaolinic clays. While both are clays, their mineral compositions and industrial applications differ significantly. Another common error is classifying it under 3816.00, which covers refractory cements and mortars. If the dinas earth is a simple earth or clay, it belongs in 2508.70; if it has been mixed with binders or other materials to form a prepared refractory mortar, it moves to 3816.00. It should also not be confused with silica sand (2505.10), despite its high silica content.

FAQ

What is the HS code for Dinas earth?

The HS code for Dinas earth is 2508.70, which also includes chamotte earth.

Is dinas earth the same as silica sand?

No. While both are high in silica, dinas earth is a specific type of refractory clay classified under 2508.70, whereas silica sand is classified under 2505.10.