BPCL

ISO Butanol (Isobutyl Alcohol) is a medium boiling, slow evaporating, colorless liquid that is useful in organic synthesis, as a chemical intermediate and as a solvent in coating applications

IUPAC Nomenclature: 2 Methylpropan – 1-ol

Chemical Formula: (CH3)2CHCH2OH

Other Name:

• Isobutyl alcohol
• IBA
• 2-methyl-1-propanol
• 2-methylpropyl alcohol
• Isopropylcarbinol

Preparation:

Isobutanol is produced by the carbonylation of propylene. Two methods are practiced industrially, hydroformylation is more common and generates a mixture of isobutyraldehydes, which are hydrogenated to the alcohols and then separated. Reppe carbonylation is also practiced.

PROPERTIES

• Excellent reactivity as an intermediate
• Improves flow and gloss in cellulose lacquers and amino baking finishes
• Latent solvent in cellulose lacquers
• Diluent in cellulose nitrate lacquers
• Readily biodegradable
• Slow evaporation rate
• Suitable sole=vent for acid-curable lacquers
• Prevents blushing
• Reduces viscosity and improves brushability
• Prevent cobwebbing in lacquers

Application

• Feedstock in the manufacture of isobutyl acetate, which is used in the production of lacquer and similar coatings, and in the food industry as a flavoring agent
• Precursor of derivative esters – isobutyl esters such as diisobutyl phthalate (DIBP) are used as plasticizers in plastics, rubbers, and other dispersions
• Precursor of p-xylene, a building block for plastic bottles, textiles and clothing.
• Paint solvent
• Varnish remover
• Ink ingredient
• Paint additive, to reduce viscosity, improve brush flow, and retard formation of oil residues (blush) on painted surfaces
• Gasoline additive, to reduce carburetor icing
• Automotive polish additive
• Automotive paint cleaner additive

USPs: Licensed by M/s Johnson Matthey Davy, UK

Product class: B