Stillingia oil

Stillingia oil is gained by solvent from the plant seeds of the Sapium family such as, Sapium sebiferum (Chinese tallow tree) and Sapium discolor (Mountain tallow tree). It is used as a drying agent in paints and varnishes. It dries readily on a glass plate in 4–6 hours. Stillingia oil's properties, such as a high iodine value, and chemical components classifies it as a drying oil. Why it has the appropriate properties to be a drying oil remain disputed. Following are three different arguments from J. Devine(1950), A. Crossley with T.P. Hilditch(1953), and V. C. Batterson with W. M. Potts(1938):