Whiting p is also naturally occuring calcium carbonate. It exists in amorphous form where as calcite exists in crystaline form. Its amorphous form gives tremendous suspending powder in coatings. It is also known as Porbunder Whiting.
Chemical Formula - CaCO3, MgCO3, CaMg, CO32.
Physical Properties -
|Appearance||- Creamish white powder|
|Coarse particle on 240 mesh||- max 0.5%|
|Sp. gravity||- 2.7 to 2.9|
|PH of 10% aqueous solution||- 8.0 - 9.0|
|Oil absorption value||- 15 to 20|
|Volatile matter||- Max 1%.|
|Purity as CaCO3||- min 85%|
Chemical Composition -
Industrial Applications -
Paints Industry - Used in undercoats, primers, glass putty, distemper, cement primer etc. It is the main ingredients in dry distemper as extender.
Rubber Industry - It is very commonly used filler in cable wire, footwerar and many rubber products.
Plastic Industry - It has a variety of appliction in plastic products.
Pesticide - It is used in pesticide formulation.
Other Uses - Use in construction chemical, foundary, welding rod and many other industries.