... 45%, PPSb) For copper plating: DPS, HI (2-mercapto thiazoline), SPS, UPS, ZPS, PEG6000-12000c) ... %, BAR (benzylidene acetone), imidazole, OCBA (O-chlorobenzaldehyde)2) Fine specialty chemicals:a) Hypophosphorous acid (CAS no ... -ethyl perfluorooctylsulfonamide (sulfluramid, CAS no.: 4151-50-2)b) Perfluoro octane sulfonyl fluoride (CAS no.: ... ) Stannous fluoride Stannous Sulphate white crystal 99.2% min.