Gypsum (Calcium Sulphate Dihydrate) is used in Portland cement manufacturing as a setting regulator (retarder), preventing flash setting of the cement during concrete mixing.
| Quality Parameter | Guaranteed Range / Value |
|---|---|
| Purity (CaSO4.2H2O) | 90.0% - 94.0% Min |
| Sulphur Trioxide (SO3) | 41.5% - 43.5% Min |
| Calcium Oxide (CaO) | 30.0% - 32.5% Min |
| Silicon Dioxide (SiO2) | 1.0% - 2.0% Max |
| Crystal Water Content | 18.5% - 20.0% |
| Chloride Content (Cl) | 0.02% Max |
| Free Moisture | 2.0% - 3.0% Max |
| Physical Sizing (Lump) | 0mm - 50mm (90% Min) |
Contact our trading brokers directly for a competitive, CIF/FOB quote on Gypsum.
