... cas no. 107 19-7 Colorless to yellow liquid PA (Propargyl alcohol) cas no. 107 19-7PA (Propargyl ... TCA, .. Zinc Plating ChemicalsAcid Zinc PlatingBAR, OCBA, OCT-5, OCT-15..Alkaline Zinc PlatingWT. BPC 48, DPE,IMZE ... Brightener& leveling agent)CB-1, CB-4, CB-5,CB-6...Acid Copper PlatingSPS, PZ-1,PZ-2 ... Propargyl Chloride, Basic Chromic Sulfate, Chromiun Nitrate.... PA (Propargyl alcohol) cas no. 107 19-7