01Overview
Calcium Sulfate Hemihydrate，Plaster of Paris
Calcium sulfate hemihydrate (plaster of Paris) serves as the core binding material for finishing and leveling plasters. Upon hydration, it forms a slightly expansive structure that effectively prevents coating cracks caused by drying shrinkage, offering excellent bonding strength, smooth workability, and superior breathability. The standard dosage is 55%-70%; a retarder must be added to extend the working time, and the material requires careful moisture-proof storage to maintain consistent performance.
Model：Calcium Sulfate Hemihydrate，Plaster of Paris Category：Dry-Mix Building Additives
02Introduction
Calcium Sulfate Hemihydrate，Plaster of Paris
Calcium sulfate hemihydrate (plaster of Paris) serves as the core binding material for finishing and leveling plasters. Upon hydration, it forms a slightly expansive structure that effectively prevents coating cracks caused by drying shrinkage, offering excellent bonding strength, smooth workability, and superior breathability. The standard dosage is 55%-70%; a retarder must be added to extend the working time, and the material requires careful moisture-proof storage to maintain consistent performance.
03Features
Introduction
The micro-expansive structure effectively prevents coating cracking due to drying shrinkage.
Excellent bonding strength ensures a firm bond with the plaster layer.
Smooth application and good breathability improve work efficiency.
A standard dosage of 55%-70% guarantees stable and reliable performance.
04Specifications
Technical Specs
| CAS Number | 10034‑76‑1 |
| Molecular Formula | CaSO₄·0.5H₂O |
05Applications
Applications
Coatings, water-based paints, stone paints, putty, mortar, fireproof coatings & building material systems
06Related
Related Products
07More Categories