Iso-Butanol (IBA), also known as Isobutanol or 2-Methyl-1-propanol, is a branched-chain alcohol used widely as a solvent and intermediate in chemical synthesis. It is a flammable, colorless liquid with a characteristic alcohol-like odor.

CAS Number:  78-83-1
Chemical Name: Isobutanol
Other Names: 2-Methyl-1-propanol, IBA
Chemical Formula: C₄H₁₀O
Molecular Weight: 74.12 g/mol
Structure: CH₃–CH(CH₃)–CH₂–OH
Appearance: Clear, colorless, flammable alcohol liquid
Odor: Sweet, alcohol-like odor
Solubility: Slightly soluble in water; but soluble in most solvents, miscible with alcohols, ketones, and ethers
Boiling Point: ~108°C (226°F)
Melting Point: –108°C
Density: 0.802 g/cm³ at 20°C
Flash Point: ~28°C (closed cup)

Application in areas:

  • Paint solvent
  • Used for coating resin
  • Varnish remover
  • Ink solvent
  • Paint additives to reduce viscosity, improve brush flow
  • Gasoline additive to reduce carburetor icing
  • Automotive polish additive

Packaging: Drum