Sodium P-Toulene Sulfonate (STS)

Molecular formulaC7H7SO3Na
H.S.Code2904100000
CAS No.657-84-1
Appearancewhite powder
Assay (wt %)75-78
Moisture (wt %)18 max.
Chloride as Cl (wt %)3.0 max.
Iron as Fe (ppm)20 max.
pHvalue (5%sol at 25°C)7~ 9
Ethanol insoluble (wt %)8 max.