HS Code for Dolomite

Dolomite is classified under HS code 2518.10. This code is situated within Chapter 25, which covers salt, sulfur, earths and stone, plastering materials, lime, and cement. Heading 25.18 specifically covers dolomite, whether or not calcined or sintered. Subheading 2518.10 is dedicated to dolomite that has not been calcined or sintered. This includes natural dolomite that is in its crude state, roughly trimmed, or merely cut by sawing into blocks or slabs of a rectangular or square shape. The classification is based on the chemical composition of the mineral (calcium magnesium carbonate) and the lack of thermal processing. If the dolomite has been heated to high temperatures to change its chemical or physical properties, it moves to a different subheading.

Products Included

• Crude dolomite rock
• Crushed dolomite (not calcined)
• Dolomite powder (natural and untreated)
• Dolomite slabs (merely sawn)
• Roughly trimmed dolomite blocks

Common Misclassification

The most common misclassification for dolomite is HS code 2518.20, which covers calcined or sintered dolomite. Importers often fail to distinguish between the raw mineral and the heat-treated version used in refractory linings. Another error is using HS code 2517.10, which covers pebbles, gravel, and crushed stone used for concrete aggregates or road metal. While dolomite can be used for these purposes, heading 25.18 is more specific to the mineral identity of dolomite and therefore takes precedence according to GRI 3(a).

FAQ

What is the HS code for dolomite?

The HS code for non-calcined and non-sintered dolomite is 2518.10.

What is the difference between 2518.10 and 2518.20?

HS code 2518.10 is for raw or merely cut dolomite, while 2518.20 is for dolomite that has been calcined or sintered (heat-treated).