Specification standard Appearance powder Colour white Purity 99pctmin Ph(0.1% weight/weight solution)6.0 min Chloride (cl) content 0.35pct max Ca+mg content 0.15pct max Fe content 0.002pct max Moisture 0.2pct max Water insolubles 0.05pct max Whiteness 80min 25kg, 50kg, 1mt
