Calcium Sulphate For Chemical Additives CA-D1

CA-D1, dihydrate calcium sulfate is produced from the processing of naturally occurring gypsum mineral, white gypsum containing about 20% water of crystallization. Depending upon vapor pressure, relative humidity, loading levels, etc., this water of crystallization, or combined water as it is often called, starts being released as it is heated above 50 °C. By about 180 °C, 75% of the combined water has been released. Water is not totally removed until temperatures exceed 400 °C.Typical Physical Properties Whiteness:96Specific Gravity:2.30Mohs Hardness:2-3Loose Bulk Density (lbs./ft.3):40Packed Bulk Density (lbs./ft.3):60pH—10% Slurry:7.2Refractive Index:1.52Oil Absorption:26.5 Reflectance: 89.1, –0.9, 2.9Median Particle Size (microns):7Top Particle Size (microns):75 Typical Chemical Analysis%CaSO4.2H2O99.0CaSO40.3CaCO3.MgCO30.3CaCO30.2Free Moisture at 45°C0.1Combined Moisture at 225°C20.3 Typical Particle Size Data Sieve Analysis %Through 50 mesh (300 microns)100.0Through 100 mesh (150 microns)100.0Through 200 mesh ( 75 microns)100.0Through 325 mesh ( 44 microns)99.5Through 425 mesh ( 32 microns)97.0 Weight Distribution% Smaller Than%20 microns 93.010 microns 72.07 microns (median) 50.05 microns 40.02 microns 23.01 micron 12.0