Cas No: 78-83-1           
EINESC No: 201-148-0
Molecular weight: 74,122 g/mol  

Chemical Formula: C4H10
Chemical Structure: 

Physical Attributes

General Properties: Colorless, liquid

Odor: Strong, similar to mould

Intensity: 0,802 g/cm3

Boiling point: 107,89 °C

Melting point: – 108 °C

Flash point: 28 °C

Vapor pressure: 9 mm Hg  (20 °C)

Refraction index: 1,3959 nD

Solubility (aqueous): 8,7 ml/ 100 ML

Çözünürlük(suda):  418 g/L (0 °C) (suda)

General Properties

Isobutanol is a colorless, flammable liquid that has a characteristic odor. Like n-butanol, 2-butanol and tert-butanol, which have isomers, isobutanol has an important place in industry. It is a commonly used solvent which is used both directly and in form of esters. It has lower intensity than water and its fume has higher intensity than air.


Isobutanol is produced by propylene carbonisation. There are two preferred methods; hydroformulation and Reppe carbonisation. Also, it is possible to genetically modify certain bacteria to use them in isobutanol production.


Isobutanol is used as raw material for resins, isobutyl arcylate, isobutyl acetate, isobutyl metharcylate esterification and dye reducer coating. On the other hand, it is commonly used as a solvent for inks, medicines, food supplements, polishes, lube oils, certain bio-fuels and many other different industries as it can be disintegrated in many organic substances.

Besides these, it is used as colorant and dehydration agent.

Safety Measures and Toxic Values

Isobutanol is rapidly absorbed and metabolized after oral consumption. It has low acute toxicity. It is irritant for eyes and skin. It must be sluiced in case of contact.

Isobutanol is also extremely flammable. It must be kept away from fire sources, it must be stored in tightly closed containers which must be placed in well-aired environments.