Appearance White crystal Purity 99.0 %min Al 0.2ppm.max Ca&Mg 0.005%max Fe 0.0003%max Chloride (Cl) 0.035%max Sulphate (SO4) 0.005%max Heavy metal (as Pb) 10ppm.max Arsenic (As) 2ppm.max PH (5% water solution) 7.5-9.0 Loss weight (120℃ drying condition) 38.5%-41.0% we have pharmaceutical grade, food grade,industrial grade
pharmaceutical, food additive,leather manufacture,dyeing and printing