Composition: 25% Cyanopropyl, 25% Phenyl, 50% Methyl Polysiloxane - Mid to High polarity -USP classification: G7, G19 Alternative to: 007™-225, AT™-225, BP™-225, CP-Sil™ 43 CB, DB™-225, HP™-225, OV™-225, Rtx™-225