Appearance: white powder
assay:≥99.5%; sodium hydroxide:≤0.1%; loss on drying: ≤0.3%; heavy metals: ≤0.01%; water insoluble: ≤0.05%; nitrate: ≤0.05%; chloride: ≤0.05%; sulfate: ≤0.01%; clarity(10% aqueous solution):transparent & clear
