Characters White, free flowing granules and fine powder Ordor None Identification Meets USP / FCC Assay (Anhydrous basis) 99.0% 100.5% Loss on drying ≤1.0% Alkalinity Meets USP / FCC PH (5g/100 ml at 25°C) 7.5 9.0 Tartrate Meets USP Heavy metals ≤10 ppm Lead < 2 ppm Residual Solvents Meets USP