Karma Associate

Calcium Carbonate

We endeavour to proffer the Calcium Carbonate of different particles sizes at the most nominal rates. Our Calcium Carbonate stands out from its counterparts owing to is its purity, whiteness, high wet ability and weather resistance capacity. We offer the Calcium Carbonate in the premium quality packaging of the desired quantity within the stipulated time.

More About Calcium Carbonate :
Calcite Calcium carbonate, or CaCO3, comprises more than 4% of the earth's crust and is found throughout the world. It’s most common natural forms are chalk, limestone, and marble, produced by the sedimentation of the shells of small fossilized snails, shellfish, and coral over millions of years. Although all three forms are identical in chemical terms, they differ in many other respects, including purity, whiteness, thickness and homogeneity.

Many of us encounter calcium carbonate for the first time in the school classroom, where we use blackboard chalk. Chalk has been used as a writing tool for over 10,000 years and is a fine, microcrystalline material. As limestone, calcium carbonate is a biogenic rock, and is more compacted than chalk. As marble, calcium carbonate is a coarsecrystalline, metamorphic rock, which is formed when chalk or limestone is recrystallised under conditions of high temperature and pressure.
Calcium carbonate, as it is used for industrial purposes, is extracted by mining or quarrying. Pure calcium carbonate can be produced from marble, or it can be prepared by passing carbon dioxide into a solution of calcium hydroxide. In the latter case calcium carbonate is derived from the mixture, forming a grade of product called “precipitated calcium carbonate,” or PCC. PCC has a very fine and controlled particle size, on the order of 2 microns in diameter,
Particularly useful in production of paper, the other primary type of industrial product is “ground calcium carbonate,” or GCC. GCC, as the name implies, involves crushing and processing limestone to create a powdery-like form graded by size and other properties for many different industrial and pharmaceutical applications.

Typical Chemical Specification



Calcium carbonate CaCO3

98.5% Min



Iron (Fe)

0.03% max

Fluoride (F)

0.005% Max

Phosphate (Po4)


Sulphate (So4)


Silica (SIO2)

0.05% max

Magnesia (MgO)

0.5 %max

Lead (Pb)

10 PPM Max

Arcenic (As)

2 PPM Max

Chloride (CI)


Soluble Alkali (as Na2O)

Less than 0.15%

Loss on drying at 105oc

50% Max

Solution in HCL (5n)


Specific Gravity

2.64 to 2.80