HS Code for Calcium carbonate

Calcium carbonate is classified under Harmonized System (HS) code 2836.50. This classification is precise, as the HS description explicitly identifies "Carbonates; calcium carbonate." This places calcium carbonate within Chapter 28, which encompasses inorganic chemicals, and specifically within the subheading for carbonates. The direct mention of "calcium carbonate" in the description ensures that this widely used compound, in its various forms, is consistently classified under this particular code. This includes both naturally occurring forms like limestone and chalk, as well as synthetically produced calcium carbonate.

Products Included

• Ground calcium carbonate (GCC) for industrial fillers.
• Precipitated calcium carbonate (PCC) for paper and plastics.
• Limestone and chalk, when classified as calcium carbonate.
• Calcium carbonate used in pharmaceuticals and food additives.

Common Misclassification

Calcium carbonate can be confused with other carbonates, such as sodium carbonate (HS 2836.20) or magnesium carbonate (HS 2836.91). The critical distinction for HS 2836.50 is the specific cation "calcium." Misclassification might occur if the product is a mixture containing calcium carbonate but is primarily identified by another component, or if it is a different carbonate altogether. For instance, dolomite, a mixture of calcium and magnesium carbonates, might be classified under other mineral codes if not processed into pure calcium carbonate. Careful attention to the specific chemical composition is necessary.

FAQ

What is the HS code for Calcium carbonate?

The HS code for Calcium carbonate is 2836.50, which specifically covers "Carbonates; calcium carbonate."

What are the main applications of Calcium carbonate?

Calcium carbonate is extensively used as a filler in plastics, paints, and paper, as a building material (limestone, marble), in agriculture to neutralize soil acidity, and as a dietary supplement or antacid in pharmaceuticals.