Color Measurement for Calcium Carbonate

By | 05/22/2020

Calcium Carbonate is a chemical compound with formula CaCO3. It is a common substance found in rocks as the mineral calcite. For manufacturers and traders of calcium carbonate, color is commonly used as a parameter of quality. Their clients rely on color for acceptability. Calcium Carbonate manufacturers needs to consistently ensure they are regularly producing from grinding process a high white grade color for their calcium carbonate powder as a finish product which is used by various industries like manufacturing, agriculture and medicine. Calcium Carbonate has the following applications:

CaCO3 has the following applications:

  1. Manufacturing industries- an ingredient utilized as filler in paper, paint, sealants and coatings.

  2. Agriculture and the food industry- animal feed and agricultural lime for soil. Many foods and cooking products, such as baking powder, dough and dry mixes. It is also an ingredient in toothpaste and soap.

  3. Medicine- supplement to treat calcium deficiencies and an antacid for heartburn and indigestion.

To ensure a consistent color for these calcium carbonate powders, manufacturers and traders uses a colorimeter to get the lightness value of the CaCO3 grinds. Typically, the higher the lightness (L*) value, the better.