Drakesol 165 Saturated hydrocarbons 64742-47-8 Penreco Solvents >> Hydrocarbon, aliphatic Silicones (Si) SEALANT The chemical composition of Penreco Drakesols is predominantly saturated hydrocarbons. These compounds may be branched, straight chain or saturated cyclic structures. The aromatic content is very low and olefins are almost nonexistent. These chemical properties, combined with the narrow distillation ranges, give Penreco Drakesols distinct advantages in meeting environmental regulations. Silicone caulking additive Saturated hydrocarbons. Used as a solvent in silicone caulking. Offers very low aromatic content and no olefins.