Viscosity, 5% aqueous solution 4500 — 8800pH at 25degC, 5% aqueous solution 8.0 — 10.0 Particle Size, THRU 10 MESH, < 2000 100 Min % Particle Size, Thru 20 mesh, < 841 micron 96 — 100 % Loss on Drying 0.0 — 1.0 WT% Alk. Earth Metals 0.0 — 1.0 WT% Silicon Dioxide 0.8 — 3.0 WT% BHT 100 — 1000 ppm wt