ZPS also called 3-（benzothiazolyl-2-mercapto）-propyl-sulfonic acid,sodium salt,the Cas No.is 49625-94-7.And the molecular formular is C₁₀H₁₀NNaO₃S₃. It is slightly yellow powder.
ZPS is used as brightening agent in acid electroplating copper baths and has,in combination with polyehters and wetting agents,the effect of depositing a bright and ductile coating.A combination with
other sulfur-containing brightening agents is also possible.For the chemical deposition of precious metals,ZPS is used as a stabilizer to prevent wild deposition.ssible in other acid electroplating baths for
silver and palladium deposition.

Chemical name:ZPS
Other name:3-（benzothiazolyl-2-mercapto）-propyl-sulfonic acid,sodium salt
Molecular formula:C₁₀H₁₀NNaO₃S₃
Molecular weight:311.38
CAS NO.:49625-94-7
Appearance: Slightly yellow powder.
Assay:90%
Melting point:320 °C
Package:20kg/drum