High Whiteness Calcium Carbonate Powder - Food Additive E170 and Plastics Filler

Product Specification

English Description

Calcium carbonate, with the chemical formula CaCO₃, is one of the most abundant natural minerals on Earth and a vital inorganic filler and functional material. Based on raw material source and processing method, this product is primarily categorized into Ground Calcium Carbonate (GCC, milled from minerals like calcite) and Precipitated Calcium Carbonate (PCC, produced chemically). It appears as a white fine powder. Leveraging its properties of high whiteness, low hardness, chemical inertness, low cost, and role as a calcium source, calcium carbonate has become the "industrial staple" and functional additive for dozens of industries, including plastics, rubber, paper, paints, building materials, food, pharmaceuticals, and feed.

In-Depth Analysis of Core Applications:

1. The King of Reinforcing Fillers in Plastics and Rubber Industries:

   • Functional Filler: In plastic products like PVC (profiles, pipes), PE, and PP, calcium carbonate is the most widely used inorganic filler. It effectively increases product volume, reduces raw material costs, improves dimensional stability, and enhances impact resistance. Through control of particle size and surface treatment (e.g., stearate coating), it achieves multiple objectives such as reinforcement, toughening, and improved processing flowability.

   • Rubber Reinforcing Filler: Used as a semi-reinforcing or extender filler in rubber products like tires, hoses, and shoe soles to modify compound properties and reduce costs.

2. The Performance and Cost Modulator in Paper and Coatings Industries:

   • Paper Filler and Coating Pigment: As a paper filler, it increases paper opacity, smoothness, and printability while significantly lowering production costs. As a coating pigment, it is a core raw material for producing high-quality coated paper and art paper, imparting excellent gloss and print results.

   • Extender Pigment in Paints: In latex paints and industrial coatings, it increases film build, improves hiding power, enhances leveling, adjusts sheen (matting), and reduces costs. Nano-sized calcium carbonate can also provide reinforcement and anti-aging effects.

3. The Safe Nutritional Source in Food and Pharmaceutical Industries:

   • Food Additive (E170): Food-grade calcium carbonate is widely used as a nutritional fortifier (calcium source), anti-caking agent, acidity regulator, and leavening agent. Commonly found in flour, breakfast cereals, milk powder, fruit juice, and chewing gum, it is safe, non-toxic, and an ideal form of dietary calcium supplementation.

   • Pharmaceuticals and Supplements: Serves as an antacid (e.g., in stomach medicines) to neutralize gastric acid; used as a calcium source in the preparation of calcium tablets and powders to prevent and treat osteoporosis.

4. The Foundation Stone and Purifier in Building Materials and Environment:

   • Building Materials: A primary raw material for producing cement, lime, and artificial marble; also used as a filler in joint compounds and sealants.

   • Environmental Applications: Used in Flue Gas Desulfurization (FGD) to react with sulfur dioxide producing gypsum; for wastewater treatment to neutralize acidic effluent and precipitate heavy metal ions; for soil amendment to adjust the pH of acidic soils.

   • Feed Additive: Serves as a mineral feed supplement to provide calcium for livestock and poultry, promoting bone development.

This product is strictly classified into Industrial Grade, Food Grade (compliant with FCC/USP/GB 1886.214), Pharmaceutical Grade (ChP/USP), and Feed Grade based on its intended use and standards. We can supply calcium carbonate products with different particle sizes (from coarse to nano-scale), whiteness levels, and surface treatments (activated or non-activated) according to customer requirements. Our products are characterized by high purity, uniform particle size distribution, low impurity content, and good stability. We are committed to providing customized calcium carbonate solutions for plastic masterbatch plants, paper mills, paint companies, food and beverage manufacturers, and pharmaceutical factories, helping our clients optimize product performance and achieve cost reduction and efficiency improvement.