CLASSIFICATION OF FIXED OIL

Fixed oils are some times classified into three groups, on the basis of their ability to absorb oxygen from air.
 Drying oil
When exposed to air undergo oxidation and form tough hard film e.g. linseed oil used in paints and varnishes.
 Non-drying
Don’t oxidized, do not form tough film, not used in paints and varnishes, olive oil, almond oil.
 Semidrying oils.