Precipitated Calcium Carbonate (PCC, Paper Grade)
CAS Number: 471-34-1
Precipitated calcium carbonate (PCC) is a synthetically produced, high-purity filler and coating pigment used extensively in alkaline papermaking. Its scalenohedral, aragonitic, or cubic crystal morphologies can be tailored to optimize paper brightness, opacity, bulk, and printability. PCC enables cost reduction by replacing fiber while maintaining or improving paper quality.
Technical Specifications
| appearance | White fine powder or slurry |
| brightness (ISO, %) | ≥ 96 |
| BET surface area (m²/g) | 5–20 |
| moisture content (powder, %) | ≤ 0.5 |
| median particle size (d50, μm) | 0.4–3.0 |
Applications
- Wet-end filler in alkaline fine paper and board
- Coating pigment for coated printing papers
- Brightness and opacity enhancement in copy paper
- Filler in tissue and specialty papers
- Co-pigment in paper coating colors with kaolin
Key Features
- High brightness and purity for superior paper whiteness
- Controllable crystal morphology for targeted paper properties
- Improves paper bulk and opacity compared to GCC
- Suitable for on-site (satellite) PCC plant supply
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