Calcium Carbonate (Ink Extender & Filler)
CAS Number: 471-34-1
Finely precipitated or ground calcium carbonate (PCC/GCC) used as an extender pigment and opacifying filler in offset, gravure, and screen printing inks to reduce cost, improve ink set speed on uncoated papers, and control flow and rheology. Ink-grade CaCO₃ is surface-treated with fatty acids for improved dispersion in oil-based ink vehicles, and its controlled particle size distribution minimizes negative effects on gloss and printability.
Technical Specifications
| appearance | White fine powder |
| moisture (%) | ≤0.3 |
| purity (CaCO₃, %) | ≥97 |
| oil absorption (g/100 g) | 15–25 |
| particle size (d50, µm) | 1–10 (grade dependent) |
Applications
- Extender and opacifying filler in offset news inks
- Cost reducer in commercial and packaging printing inks
- Set-speed enhancer in oil-based inks on uncoated papers
- Rheology modifier in gravure and flexo inks
- Filler in screen-printing ink formulations
Key Features
- Low cost extender to reduce expensive TiO₂ and organic pigment loading
- Fatty acid coating for easy wetting and dispersion in oil-based inks
- Improves set speed in oil-based inks on uncoated and newsprint papers
- Controlled particle size minimizes impact on gloss and printability
Send Inquiry
More in Printing Ink Chemicals
Acrylic Resin for Waterborne Flexo Ink
25035-69-2
Alkyd Resin for Offset Ink (Varnish Grade)
68440-04-0
Amine-Modified Polyether Acrylate (PEA Synergist)
Antistatic Agent for Printing Inks (EG-Based)
107-21-1
C5 Aliphatic Hydrocarbon Resin for Ink
64742-16-1
C9 Aromatic Hydrocarbon Resin for Ink
68955-27-1
Calcium Drier for Offset Ink (Auxiliary Drier)
61789-36-4
Carbon Black Pigment (Furnace Black) for Printing Ink
1333-86-4