Industrial and food-grade calcium carbonate differ in composition, application, and quality standards, requiring careful selection based on specific needs. Regardless of type, all calcium carbonate must be produced and used in strict accordance with national standards to ensure safety and stability.

I. Industrial Calcium Carbonate

Industrial calcium carbonate, also known as precipitated calcium carbonate, is an inorganic compound manufactured from limestone through mineral selection, lime hydration, and carbonation reactions. It is widely used in industrial production and can be applied in building materials, papermaking, rubber, plastics, coatings, paints, adhesives, textiles, and other fields. Its main characteristics include: coarse particles, not easily absorbed by water; high whiteness, not easily polluted; high hardness, not easily broken.

II. Food Grade Calcium Carbonate

Food grade calcium carbonate, also known as light calcium carbonate, is a food additive produced from limestone or marble. It is mainly used to increase the calcium content of food and adjust the taste and texture of food, often used in bread, biscuits, dairy products, candies, and beverages. Its main characteristics include: fine particles, easy to dissolve; light taste, does not affect the taste of food; harmless to the human body, safe and reliable.

III. Differences Between Industrial Calcium Carbonate and Food Grade Calcium Carbonate

1. Different Composition: Industrial calcium carbonate and food grade calcium carbonate differ in composition. The former may contain some impurities and harmful substances due to industrial production needs, while the latter is purer and harmless to human health.

2. Different Uses: Industrial calcium carbonate is mainly used in industrial production, while food grade calcium carbonate is a food additive used to increase calcium content and adjust food taste.

3. Different Quality Standards: Industrial calcium carbonate and food grade calcium carbonate also have different quality standards. Industrial calcium carbonate mainly follows its use and industrial quality standards, with some special requirements in terms of appearance, whiteness, and content; while food grade calcium carbonate must meet relevant food safety standards and regulations.

In summary, industrial calcium carbonate and food grade calcium carbonate differ in composition, use, and quality standards, and the application field and type should be selected according to the specific situation. Regardless of the type of calcium carbonate, it is necessary to strictly follow relevant national standards for production and use to ensure its safety and stability.