Calcium Oxide
CaO
High-purity quicklime that scavenges residual moisture from hygroscopic fillers and polymer formulations.
- Appearance
- White powder
- Chemical Name
- Calcium Oxide
- Chemical Formula
- CaO
- Moisture Absorption
- High efficiency
- Thermal Stability
- Excellent
- Packing
- 25 Kg bag
- Regulatory
- FDA 21 CFR 184.1210 · EU Regulation (EC) No 1333/2008 / 1334/2008
Calcium oxide (CaO), commonly referred to as quicklime, is a high calcium content derivative of 95% pure calcium carbonate (limestone). It is produced by heating calcium carbonate to 1100°C, where carbon dioxide dissociates as a gas from the calcium carbonate.
Calcium Oxide is an effective moisture scavenger widely used in the plastics and polymer processing industry to eliminate residual moisture from hygroscopic fillers and polymer formulations. By reducing moisture content during processing, it helps minimize defects such as porosity, voids, silver streaks, and surface imperfections while improving the overall quality of the finished product. It can be used as a desiccant in PE/PP masterbatches, rubber compounds and PVC Plastisol. Calcium Oxide forms Calcium Hydroxide once it absorbs water.
Key Benefits
- Excellent moisture absorption capability
- Reduces moisture-related processing defects
- Improves surface finish and product appearance
- Enhances processing stability and consistency
- Helps improve mechanical properties of finished products
- Cost-effective solution for moisture control
- Suitable for a wide range of polymer formulations
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