Semi-drying oil

A semi-drying oil is an oil which partially hardens when it is exposed to air. This is as opposed to a drying oil, which hardens completely, or a non-drying oil, which does not harden at all. Oils with an iodine number of 115–130 are considered semi-drying.

Examples of semi-drying oils

 * Corn oil
 * Cottonseed oil
 * Sesame oil
 * Grape seed oil
 * Sunflower oil