1) 4-Phenolsulfonic Acid Sodium Salt dihydrate
MF: C6H5NaO4.2H20
Appearance: white crystal powder
Assay: 99%min.
Chloride: 0.1% max.
Sulfate: 1.0% max.
Fe: 0.01% max
Heavy metal ( as Pb): 0.005% max.
Insoluble matterr in water: 0.1% max.
2) 4-Phenolsulfonic Acid Sodium Salt anhydrate
MF: C6H5NaO4
Appearance: white powder
Assay: 99%min.
Chloride: 0.05% max.
Sulfate: 0.5% max.
Fe: 0.002% max
Heavy metal ( as Pb): 0.002% max.
Insoluble materrer in water: 0.01% max.
Package: 25KG/kraft bag