Basic Introduction: Limestone is a common sedimentary rock primarily composed of the mineral calcite (calcium carbonate, CaCO3​). It is a fundamental raw material in many industries. It often forms from the accumulation of marine organisms’ shells and skeletons.

Synonyms: Chalk, calcite rock

Chemical Formula: CaCO3​ (Calcium carbonate)

CAS NO.: 1317-65-3

8-digit HS Code: 25210090

Industries Used In:

• Construction: A key ingredient in cement production and as a crushed stone aggregate for roads and concrete.
• Agriculture: Used as an agricultural lime to adjust soil pH and as a source of calcium for plants.
• Metallurgy: Used as a flux in the smelting of iron ore.
• Glass and Paper: An essential raw material in the manufacturing of glass and paper.

Application or Usage: Used in a vast range of applications from building materials to agricultural soil treatments and industrial processes.