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Octanol is a straight chain fatty alcohol with eight carbon atoms and the molecular formula CH3(CH2)7OH. Although the term octanol usually refers exclusively to the primary alcohol 1-octanol, there are other less common isomers of octanol such as the secondary alcohols 2-octanol, 3-octanol and 4-octanol.
Additional recommended knowledge
Octanol occurs naturally in the form of esters in some essential oils. The primary use of octanol is in the manufacture of various esters (both synthetic and naturally occurring), such as octyl acetate, which are used in perfumery and flavors. Other uses include experimental medical applications utilizing octanol to control Essential Tremor and other types of involuntary neurological tremors.
The process generates a range of alcohols that are separated by distillation.
Water/ octanol partitioning
Octanol and water are immiscible. The distribution of a compound between water and octanol is used to calculate the partition coefficient 'P' of that molecule (often expressed as its logarithm to the base 10, log P). Water/ octanol partitioning is a good approximation of the partitioning between the cytosol and lipid membranes of living systems.
Many dermal absorption models consider the stratum corneum/ water partition coefficient to be well approximated by a function of the water/ octanol partition coefficient of the form :
Where a and b are constants,Ksc / w is the stratum corneum/ water partition coefficient, andKo / w is the water/ octanol partition coefficient. The values of a and b vary between papers, but Cleek & Bunge  have reported the values a=0, b=0.74.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Octanol". A list of authors is available in Wikipedia.|