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n-butyl alcohol

Product name n-butyl alcohol
Synonyms n-butanol
GOST 5208-81
CAS 71-36-3

n-Butyl alcohol (n-butanol) is a clear liquid with characterictic vinous odor. It is miscible with a number of organic solvents. n-Butanol is soluble in water and it forms azeotropic solution with it (42% H2O by mass, bp 92.7°C). n-Butyl alcohol is a typical aliphatic alcohol. The n-butanol vapour has an irritant effect on mucous membranes and narcotic effect in higher concentration.;


  • n-Butanol is primarily produced in hydroformylation (oxo-synthesis) process from propylene at 120-160°C and 20-35 MPa:

    CH3-CH=CH2 + CO + H2 --> CH3CH2CH2CHO + (CH3)2CHCHO --> CH3(CH2)3OH + (CH3)2CHCH2OH

  • by Reppe synthesis from propylene:

    CH3-CH=CH2 + 3CO + 2H2O --> n-butanol + isobutanol + 2 CO2

  • by crotonaldehyde hydrogenation starting from acetaldehyde:

    2CH3CHO --> CH3CH(OH)CH2CHO --> CH3CH=CHCHO --> CH3(CH2)3OH

  • by ABE fermentation of biomass with the bacterium Clostridium acetobutylicum, also known as the Weizmann organism.


  • as a solvent for a wide variety of chemical and textile processes;
  • as a paint thinner;
  • as a component of hydraulic and brake fluids;
  • as a direct fuel in any standard internal combustion engine engineered for gasoline usage;
  • as urea- and melamino-formaldehyde resins modifier;
  • n-butanol is an intermediate product in plasticizers manufacture;
  • in butyl acetate, butyl acrylate and glycol ethers production;

  • Manufacturer(s) JSC Salavatnefteorgsintez
    Chemical structure of n-butanol

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