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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

123-96-6

Molecular Formula

C8H18O [ Structural CH3(CH2)5COHCH3 ]

Appearance

Colourless liquid with a pungent odour

Melting Point

-38oC

Boiling Point

174 – 181oC

Vapour Pressure

0.15 mm Hg at 25oC

Specific Gravity

0.819

Flash Point

71oC (closed cup)

 

Applications:

 

·         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.