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Appearance: colorless or white crystals
Assay: 99.5% min.
SO42-: 0.02% max.
Moisture: 0.05% max.
Fe 3+: 0.00025% max.
Water insoluble matter: 0.02% max.
Heavy metals(pb) : 0.0005% max
Moisture: 0.1% max
Packing: 25kgs double-layer woven bag lined with plastic or according to customer's request
Properties: White crystal, which is odorless, nonvolatile, non-wettable, combustible, lowly toxic, soluble in water, slightly soluble in organic solvents with the melting point of 2050. Its water solution is highly ionized and its all common salts are soluble in water.
Sweetener, amphoteric surfactant, paper pulp bleacher, sulfurizing agent, flame retardant, disinfectant, electroplating additive, etc.