UPS(3-S-thiuronium propyl sulfonate)
CAS No.: 21668-81-5
Molecular formula C4H10N2O3S2
Molecular weight 198.2
PH: 1-4(5% solution)
Assay 95%
Appearance: white powder
Application: It is used as a brightener in acid copper plating and has an effect of depositing a bright and ductile coating together with polyethers and wetting agents, for the chemical deposition of precious metals.