UPS also called 3-s-isothiuronium propyl sulfonate,the Cas No.is 21668-81-5.And the molecular formular is C₄H₁₀N₂O₃S₃. It is white powder.
UPS is used for the deposition of bright,ductile copper coating in combination with polyethylene glycols and non-ionic surfactants.The employment of UPS is also possible in other acid electroplating baths for silver and palladium deposition.

Chemical name:UPS
Other name:3-s-isothiuronium propyl sulfonate
Molecular formula:C₄H₁₀N₂O₃S₃
Molecular weight:198.26
CAS NO.:21668-81-5
Appearance: White powder.
Assay:99%
Melting point:240 °C
Package:25kg/drum