Calcium Sulphate For Chemical Additives CA-A2

CA-A2 is an anhydrous calcium sulfate filler, is made by high temperature calcinations of select, high purity gypsum which is then ground and air separated into a bright, white powder.Calcium sulfate is preferred over calcium carbonate in halogenated polyester systems because it does not interfere with the action of the halogen.Typical Physical PropertiesWhiteness:96Specific Gravity:2.90Mohs Hardness:2-3Loose Bulk Density (lbs./ft.3):35Packed Bulk Density (lbs./ft.3):66pH—10% Slurry:10.5Refractive Index:1.58Oil Absorption:27.5 Reflectance: 92.1, –1.2, 0.8Median Particle Size (microns):2.0Top Particle Size (microns):75 Typical Chemical Analysis%CaSO499.0CaCO3.MgCO30.3CaCO30.2Free Moisture at 45°C0.1Combined Moisture at 225°C0.3 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)99.0 Weight Distribution% Smaller Than%20 microns 92.010 microns 83.05 microns 70.02 microns(median) 50.01 micron 36.0