PURITY 99.50%-101.0%MIN99.9%APPEARANCE WHITE CRYSTAL OR CRYSTALLINEPOWDER /WHITE POWDERWHITE CRYSTAL OR CRYSTALLINE POWDERIDENTIFICATION POSITIVEPOSITIVECLARITY AND COLOR OF SOLUTION CLEAR AND COLORLESSCLEAR AND COLORLESSHEAVY METALS LESS THAN 20PPMLESS THAN 20PPMCHLORIDE LESS THAN 140PPMLESS THAN 140 PPMSUIFATE LESS THAN 0.04%LESS THAN 0.04%LOSS ON DRYING LESS THAN 0.5%0.09SUIPHATED ASH LESS THAN 0.05%0.03%EASILY CARBONATED MATTER LESS THAN FLUID QLESS THAN FLUID QFREE SALICYLIC ACID LESS THAN 0.05%LESS THAN 0.05%RELATED COMPOUND LESS THAN 0.1%LESS THAN 0.1%ORGANIC VOLATILE IMPURITIES UP TO STANDARDUP TO STANDARD