... 3-PSAs an intermediate for the synthesis of electroplating intermediates and pharmaceutical intermediates; brightening agents; surfactants and lithium battery, etc. ... ,BBI..Impurity ToleranceATPN , SSO3, PN, PZN, FEZX ..Brighter and leveling agent at low area lightPOPDH, PS, POPS,..Low foam ... , Q75, Propargyl Chloride, Basic Chromic Sulfate, Chromiun Nitrate.... hot sell for 1,3- PS cas no. 1120-71-4.