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Name: Sodium Feldspar Powder Na2O: 10.5% K2O: less than 0.5% Sio2: 69-70% Al2O3: 18% Fe2O3: Below 0.1% CaO: Below 1% MgO: Below 0.1% Whiteness: 62% L-value: 80% a value: Below 3% b value: Below 8%
