Isobutyl alcohol Isobutanol Methylpropanol

Isobutanol

Other names: 2-methylpropan-1-ol, isobutyl alcohol, 2-methyl-1-propanol

CAS Number: 78-83-1

EC Number: 201-148-0

Sum Formula: C4H10O

Molar Mass: 74.12 g/mol

Appearance: colorless, oily liquid with a sweet, musty odor

Isobutanol, also known as isobutyl alcohol or 2-methylpropan-1-ol, is an organic compound belonging to the alcohol group. It is a branched four-carbon alcohol used in chemical, technical and industrial applications as a solvent, intermediate and component of various formulations.

Due to its solvent properties, volatility and compatibility with many organic systems, isobutanol is used in coatings, paints, varnishes, fuel-related applications and organic synthesis.

Chemical and Physical Properties:

Form: liquid

Color: colorless

Odor: sweet, musty, alcohol-like

Melting Point: approximately -108°C

Boiling Point: approximately 108°C

Density: approximately 0.80 g/cm3 at 20–25°C

Solubility in Water: approximately 85 g/L

Vapor Pressure: approximately 8 hPa at 20°C

Flash Point: approximately 28°C, closed cup

Autoignition Temperature: approximately 430°C

Explosion Limits: approximately 1.5–12% by volume in air

Type of Compound: branched aliphatic alcohol

Applications:

Solvent Applications:

Used as a solvent in chemical, laboratory and industrial processes.

Coatings and Paints:

Applied in the production of paints, coatings, lacquers and varnishes.

Fuel and Fuel Additives:

May be used as a component of fuels and fuel additive systems.

Chemical Synthesis:

Used as an intermediate in the synthesis of esters, solvents, plasticizers and other organic compounds.

Technical Formulations:

Applied in selected cleaning, extraction and process formulations requiring an alcohol solvent.

Key Properties:

Alcohol Functionality: contains a hydroxyl group, enabling use in esterification and other alcohol-based reactions.

Branched Structure: differs from n-butanol by its branched carbon chain, affecting physical properties and solvent behavior.

Solvent Performance: suitable for dissolving a range of organic substances.

Flammable Liquid: requires storage and handling under conditions suitable for flammable solvents.

Storage:

Store in a tightly closed container in a cool, dry and well-ventilated place.

Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

Protect from direct sunlight, moisture and contamination.

Keep away from strong oxidizing agents, acids and incompatible materials.

Store under conditions suitable for flammable liquids.

Handling:

Use only in a well-ventilated area.

Avoid breathing vapors, mist or aerosol.

Avoid contact with skin and eyes.

Use explosion-proof equipment where required.

Ground and bond container and receiving equipment when handling larger quantities.

Use appropriate personal protective equipment, including protective gloves, protective clothing, eye protection and face protection.

This product is intended strictly for technical, laboratory, industrial and research use. It is not intended for consumption, medical, pharmaceutical, cosmetic or feed applications.