Calcium Carbonate (CaCO₃) -Huachu International Supply Chain (Hainan) Co., Ltd

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Calcium Carbonate (CaCO₃)

(Comprehensive Industrial & Food/Pharma Grade Specifications)

1. Product Overview

Calcium Carbonate is an inorganic compound with multifunctional applications, available in natural (GCC) and synthetic (PCC) forms. Key characteristics:

- Chemical Formula: CaCO₃ | Molecular Weight: 100.09 g/mol

- Appearance: White powder or crystalline solid

- Alkalinity: pH 9-10 (saturated solution)

2. Key Properties

| Parameter | Value/Description |

| Density | 2.71 g/cm³ (Calcite), 2.83 g/cm³ (Aragonite) |

| Melting Point| 825°C (decomposes to CaO + CO₂) |

| Solubility | 0.0014 g/100 mL (water, 25°C), soluble in acid |

| Crystal Forms| Calcite (trigonal), Aragonite (orthorhombic), Amorphous (PCC) |

3. Applications

✔ Industrial Uses

- Construction: Cement raw material, marble aggregates.

- Polymers: Filler for plastics/rubber (improves rigidity, reduces cost).

- Environmental: Flue gas desulfurization (FGD), wastewater neutralization.

✔ Food & Pharmaceuticals

- Food Additive (E170): Anti-caking agent, calcium fortifier.

- Pharma: Tablet excipient, calcium supplements.

✔ Specialty Applications

- Toothpaste abrasive, cosmetic filler, soil pH regulator.

4. Product Variants

| Type | Description |

| GCC (Ground Calcium Carbonate) | Coarser particles, mined from natural limestone/marble. |

| PCC (Precipitated Calcium Carbonate) | Finer, higher purity, chemically synthesized. |

5. Safety & Compliance

- Decomposition: Releases CO₂ at high temperatures (>825°C).

- Handling: Avoid strong acids (vigorous reaction).

- Standards: FCC (food), USP (pharma), ISO 9001 (industrial).

6. Packaging & Storage

- Standard: 25kg bags、ton bag or bulk. Custom options available.

- Shelf Life: 24 months in dry, cool conditions.

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