Chemically Talking, this molecule is "midway" between Sorbitan Oleate and Sorbitan Trioleate, this means that it's also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but in a very ratio of two:3 hence the "Sesqui" aspect inside the molecule's name. In addition to using a good securit