Food-grade light calcium carbonate is made from high-quality natural calcium carbonate ore and is processed strictly according to food processing requirements. No chemical substances are added during the entire production process, which is very safe. Due to its high purity and whiteness, and very low impurity content, it is used as a leavening agent, improver, nutritional supplement, etc. in the food industry. It is an indispensable additive, improver and calcium supplement for cereal products, bean products, dairy products, flour products, biscuits, salt, flavors and spices, soft capsule health products, chewing gum and daily chemical products.
Product name: Light Calcium carbonate | ||||
Main ingredient: Light Calcium carbonate | ||||
Items | Standard values | (Ref.Standard) | ||
Sensory index | Appearance | White or gray- white powder | USP | |
Physical and chemical index | Assay, ω/% | 98.0~100.5 | USP | |
Loss on drying, ω/% | ≤2.0 | USP | ||
Insolubles in hydrochloric acid, ω/% | ≤0.2 | USP | ||
Dissociate alkali | Pass | USP | ||
Magnesium and Alkali metal, ω/% | ≤1.0 | USP | ||
Barium/(mg/kg) | ≤300 | USP | ||
Arsenic/(mg/kg) | ≤3.0 | USP | ||
Fluorine/(mg/kg) | ≤50 | USP | ||
Lead/(mg/kg) | ≤3.0 | USP | ||
Mercury/(mg/kg) | ≤1.0 | USP | ||
Cadmium/(mg/kg) | ≤2.0 | USP | ||
Preservation methods | Ventilation,clean, room temperature,dry,not be mixed with poisonous and corrosive substances | |||
Shelf Life | The shelf life is 24 months from the date of production and the original packaging is in good condition | |||
Packing | 25k/ bag |
Differences Between Food-Grade Light Calcium Carbonate and Food-Grade Heavy Calcium Carbonate
Food-grade calcium carbonate comes in two main forms: light calcium carbonate (precipitated) and heavy calcium carbonate (ground calcium carbonate, GCC). Though both serve similar functions as calcium sources, they have notable differences in production, physical properties, and applications.
1. Production Process
• Light Calcium Carbonate (PCC): Produced through a chemical precipitation process that allows for precise control over particle size and purity. This process leads to a finer, more uniform product.
• Heavy Calcium Carbonate (GCC): Extracted and processed from natural limestone or marble deposits through grinding and milling. It is a naturally occurring mineral that is mechanically processed to form powdered calcium carbonate.
2. Particle Size and Texture
• Light Calcium Carbonate: Has a much smaller particle size (typically 0.02 to 0.1 microns) and a lighter bulk density. Its fine texture allows it to blend seamlessly into food products without affecting texture or taste.
• Heavy Calcium Carbonate: Features larger particles (1 to 10 microns) and a higher bulk density, making it heavier and coarser compared to light calcium carbonate.
3. Purity and Composition
• Light Calcium Carbonate: Produced in a controlled environment, light calcium carbonate tends to be of higher purity, with fewer contaminants. This makes it more suitable for applications requiring strict quality standards, such as in food supplements and pharmaceuticals.
• Heavy Calcium Carbonate: Although still of food-grade quality, heavy calcium carbonate may contain more natural impurities due to its direct extraction from mineral sources.
4. Solubility and Reactivity
• Light Calcium Carbonate: Due to its smaller particle size, light calcium carbonate has a larger surface area, making it more reactive and easily absorbed in the digestive system when used as a dietary supplement.
• Heavy Calcium Carbonate: Less reactive and more slowly absorbed because of its larger particle size and lower surface area.