Semi-drying oil
Encyclopedia
A semi-drying oil is an oil
which partially hardens when it is exposed to air. This is as opposed to a to 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.
Oil
An oil is any substance that is liquid at ambient temperatures and does not mix with water but may mix with other oils and organic solvents. This general definition includes vegetable oils, volatile essential oils, petrochemical oils, and synthetic oils....
which partially hardens when it is exposed to air. This is as opposed to a to drying oil
Drying oil
A drying oil is an oil that hardens to a tough, solid film after a period of exposure to air. The oil hardens through a chemical reaction in which the components crosslink by the action of oxygen . Drying oils are a key component of oil paint and some varnishes...
, which hardens completely, or a non-drying oil, which does not harden at all. Oils with an iodine number
Iodine number
The iodine value in chemistry is the mass of iodine in grams that is consumed by 100 grams of a chemical substance. An iodine solution is yellow/brown in color and any chemical group in the substance that reacts with iodine will make the color disappear at a precise concentration...
of 115-130 are considered semi-drying.
Examples of semi-drying oils
- Corn oilCorn oilCorn oil is oil extracted from the germ of corn . Its main use is in cooking, where its high smoke point makes refined corn oil a valuable frying oil. It is also a key ingredient in some margarines. Corn oil is generally less expensive than most other types of vegetable oils. One bushel of corn...
- Cottonseed oilCottonseed oilCottonseed oil is a cooking oil extracted from the seeds of cotton plant of various species, mainly Gossypium hirsutum and Gossypium herbaceum...
- Sesame oilSesame oilSesame oil is an edible vegetable oil derived from sesame seeds. Besides being used as a cooking oil in South India, it is often used as a flavor enhancer in Chinese, Japanese, Korean, and to a lesser extent Southeast Asian cuisine.The oil from the nutrient rich seed is popular in alternative...
- Grape seed oilGrape seed oilNot to be confused with Rapeseed oil.Grape seed oil is a vegetable oil pressed from the seeds of various varieties of Vitis vinifera grapes, an abundant by-product of winemaking.- Cooking :...