Synthetic Anhydrite is Calcium Sulfate in Anhydrous form, milled to an average Blaine of 3000 -5000 g/cm2. It is a light buff colour, which is important for colour sensitive formulations (alternative anydrites often exhibit a grey/khaki tinge). Backed by European know-how and quality assurance, our material comes from a blend of 5 plants to ensure consistently low Cl and moisture levels, and consistent sizing. The product is packed in lined/waterproof bags immediately after manufacture.
Natural Anhydrite, sourced from Asia, is designed to be used as an expansive filler. Calcium Sulfate Anhydrous content is 85.0% min ( typically 88-90% ).