Diacetone Alcohol (DAA), also known as 4-hydroxy-4-methylpentan-2-one, is a colorless liquid with a mild odor. It is a ketone alcohol, meaning it contains both a hydroxyl group (-OH) and a carbonyl group (C=O) in its molecular structure. Its chemical formula is C₆H₁₂O₂, and it is commonly referred to by its IUPAC name as 4-hydroxy-4-methylpentan-2-one. DAA is used in a variety of industrial applications, particularly as a solvent and intermediate in the production of other chemicals. It is a versatile solvent that has similar properties to other ketones and alcohols.
Properties of Diacetone Alcohol (DAA):
- Molecular Formula: C₆H₁₂O₂
- IUPAC Name: 4-Hydroxy-4-methylpentan-2-one
- Boiling Point: 168.5°C (335.3°F)
- Melting Point: -55.5°C (-67.9°F)
- Density: 0.94 g/cm³ at 20°C
- Flash Point: 60°C (140°F) – flammable
- Solubility: Slightly soluble in water, but miscible with organic solvents like acetone, ethanol, toluene, and chloroform.
Key Uses of Diacetone Alcohol (DAA):
Solvent:
DAA is primarily used as a solvent in paints, coatings, lacquers, and varnishes due to its ability to dissolve a variety of resins and polymers. It is also used in cleaning and degreasing applications.
Chemical Intermediate:
Diacetone alcohol is used in the production of acetone and other industrial chemicals such as plasticizers.
Paint and Coatings:
DAA is used as a coalescing agent in waterborne paints and coatings, improving their film formation and drying properties.
Ink Formulation:
It is used in ink formulations, particularly in the production of flexographic inks.
Aerosol Formulations:
DAA is sometimes used in aerosol products such as spray paints and air fresheners.