Chemical Specifications Appearance (Colour) White crystalline Powder Solubility (Turbidity) 50% aq. solution Clear, colorless liquid pH (5% aq. solution) 5.5 - 7.0 Chloride (CI) max. 0.001% Sulphate (SO4) max. 0.002% Iron (Fe) max. 0.0002% Heavy Metals (Pb) max.0.0005% Sodium (Na) max. 0.02% Potassium (K) max.0.02% Water (KF) max. 1.0% DNase, RNase, Protease Not detected