Calcium carbonate powder has many uses in various industries, including food, medicine, construction, and cleaning:

• Food: Calcium carbonate can be used as a raising agent and pH regulator in baked goods, and to regulate the acidity or alkalinity of fruit juices, pastes, and preserves. It is also found in products like baking powder, dry-mix dessert mixes, dough, and wine.
• Medicine: Calcium carbonate is used as an antacid, phosphate binder, and base material for medicinal tablets. It is also an effective dietary calcium supplement; however, recommended dosage should be followed, it should be stored at room temperature, and kept out of reach of children and pets.
• Construction: Calcium carbonate is an important ingredient in cement and marble and is widely used in construction materials.
• Cleaning: Calcium carbonate is a mild abrasive agent that can be used to clean and polish delicate surfaces like marble and vitroceramic hobs.
• Other uses: Calcium carbonate is also used in the manufacture of paints, paper, plastics, glasses, and soap, and as a filtration agent and filler in plastics.