Isobutanol
Isobutyl Alcohol, 2-Methyl-1-Propanol, IBA.
- CAS
- 78-83-1
- EC
- 201-148-0
- Sectors
- Coatings, Adhesives, Sealants & Elastomers, Automotive, Printing & Packaging
Isobutanol (CAS 78-83-1) is a medium-boiling alcohol supplied as a colourless oily liquid, used as an industrial solvent and chemical intermediate in nitrocellulose lacquers and varnishes and as a feedstock for isobutyl esters. This Technical Grade liquid offers an ideal balance of evaporation rate and solvency for industrial coating systems.
It is particularly effective in lacquers and varnishes, where it improves flow and prevents "blushing" in humid conditions. As a chemical feedstock, it is essential for the production of isobutyl esters used in the lubricant and plasticizer markets.
In the automotive sector, isobutanol serves as a high-performance fuel additive and solvent for brake fluids. Its low water solubility and high octane properties make it a versatile component in modern chemical processing.
Typical Properties
| Molecular formula | C4H10O |
|---|---|
| Molecular weight | 74.12 g/mol |
| Appearance | colourless oily liquid |
| Form | Solid |
| Color | APHA: ≤10 |
| Odor | Slightly suffocating; nonresidual alcoholi |
| Melting point | -108 °C |
| Boiling point | 108 °C |
| Density | 0.8018 g/cm³ @ Temp: 24 °C |
| Water solubility | 95 g/L (20 °C) |
| Flash point | 82 °F |
| pH | 7 (80g/l, H2O, 20°C) |
| GHS signal word | Danger · Flammable, Corrosive, Irritant / harmful, Health hazard |
| HS code | 29051990 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Isobutanol
Applications
- Coating Solvent: Used in nitrocellulose lacquers and amino-resin systems to optimize viscosity and film formation.
- Esterification Feedstock: Raw material for isobutyl acetate, a major solvent in the printing ink and adhesive industries.
- Chemical Intermediate: Utilized in the synthesis of herbicides, antioxidants, and flotation agents for mining.
Safety & Risks
Flammable Liquid and causes Serious Eye Damage. Wear Solvent-Resistant Gloves, Goggles, and handle in Flame-Proof Areas.
Packaging
165 kg Metal Drums or 800 kg IBC Tanks.