EHS (C2H5NaO3S) Sodium Hydroxy Ethylene Sulfonate CAS No.1562-00-1 Appearance: Colorless to Yellowish liquid Assay: 45% min. PH: 2~4 Solubility in water: any ratio ( @20) Density: 1.31~1.34g/cm3 Application: Assistant brightener for nickel plating, improve deposit ductility and dispersing ability