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2-Octanol(Capryl alcohol)

Synonyms: Capryl alcohol; methylhexyl carbinol;1-methyl-1-heptanol; 2-octyl alcohol


2-Octanol (Capryl alcohol) is a monohydric alcohol which is produced as a major product along with sebacic acid in the caustic fusion of castor oil under high temperature conditions.


CH3-(CH2)5-CH(OH)-CH2-CH=CH-(CH2)7-COOH (Ricinoleic Acid) + NaOH -> 133oC air -> HOOC-(CH2)8-COOH (Sebacic Acid) + CH3-(CH2)5-CH(OH)-CH3 (2-Octanol)


Physical, Chemical  Properties & Specifications:


CAS Number


Molecular Formula

C8H18O [ Structural CH3(CH2)5COHCH3 ]


Colourless liquid with a pungent odour

Melting Point


Boiling Point

174 181oC

Vapour Pressure

0.15 mm Hg at 25oC

Specific Gravity


Flash Point

71oC (closed cup)




         2-Octanol is the main raw material for some esters. It is used as a solvent, dehydrater and antibubbling agent

         In coal industry, it is used as floatation agent; finds uses as a frother in mineral flotation.

         In farming chemical industry too, it is used as floatation agent & for producing emulsifiers

         In chemical fiber industry, it is used as fiber oil

         Used in producing the plastic plasticizer and synthetic perfume. The refined derivative can be used to produce plasticizers such as dioctanol phthalate (DCP), dioctanol adipate (DCA).

         It can be used as a possible alternate for 2-ethylhexanol or isooctyl alcohol in the preparation of diesters, monomeric and polymeric plasticizers.

         The refined 2-Octanol is used as a raw material to produce caproic acid. In some countries the caproic acid is used to produce ethyl caproate - a kind of flavor.