Di-sec-butyl peroxydicarbonate sec-Butyl peroxydicarbonate bis-sec-butyl peroxydicarbonate Di-sec-butyl perdicarbonate Peroxydicarbonic acid, bis(1-methylpropyl) ester di-sec-butyl peroxydicarbonate, 53-100% di-sec-butyl peroxydicarbonate, <= 52% with diluent Lupersol-225