Isobutanol extracted from OTC parquet glue.
| IUPAC name
| Other names
|Molar mass||74.122 g/mol|
|Appearance||Colorless viscous liquid|
|Density||0.802 g/cm3 (at 20°C)|
|Melting point||−108 °C (−162 °F; 165 K)|
|8.7 mL/100 ml|
|Solubility||Miscible with acetone, chloroform, ethanol, isopropanol, heptane, hexane, methanol,toluene, xylene|
|Vapor pressure||9 mmHg (at 20 °C)|
|Safety data sheet||ScienceLab|
|Flash point||28 °C|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
| 3.350 mg/kg (rat, oral)|
2.460 mg/kg (rabbit, dermal)
720 mg/kg (rat, IP)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Isobutanol, also known as 2-methylpropan-1-ol or 2-methyl-1-propanol is an organic chemical compound, with many uses in industry and chemistry. It is an isomer of butanol and has the formula (CH3)2(CH)CH2OH.
Isobutanol will burn in open air, but due to its high flash point of 28 °C, it will only ignite at standard conditions if heated prior.
Isobutanol is a colorless viscous liquid, with a strong characteristic odor. It is poorly soluble in water (8.7 mL/100 mL), but miscible with many organic solvents such as acetone or ethanol. It has a boiling point of 107.89 °C and a melting point of −108 °C.
Isobutanol is available at hardware stores as wood paint drying accelerator (acid-curing parquet lacquer/varnish) or as parquet adhesive. The former generally contains HCl, which require neutralization, while the latter does not, but both may have various additives in their composition, so distillation is required to obtain a pure compound.
Isobutanol can be prepared by hydrolyzing isobutyl chloride with NaOH, followed by neutralization of base with an excess of sodium bicarbonate, followed by separation, drying with MgSO4 and lastly distillation.
Isobutanol however is much cheaper to buy that synthesize.
Isobutanol is the least toxic isomer of butanol. Its strong odor however may cause nausea or dizziness.
Should be stored in closed bottles away from any heat source.
Isobutanol can be safely burned, though due to its high flash point, it should be mixed with a more flammable solvent and then burned. Do this outside.