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Iso Butanol

Product Information

CAS Number

78-83-1

Safety Data Sheets Download

Other Names

2-Methyl-1-Propanol
Emulsogen T
Antigel 80001
1-PROPANOL, 2-METHYL-
1-Hydroxymethylpropane
Isopropylcarbinol
Isobutyl Alcohol

Iso Butanol

About Iso Butanol

Iso Butanol, also known as isobutyl alcohol or 2-methyl-1-propanol, is an organic compound with the chemical formula C₄H₁₀O. It is a colorless, flammable liquid with a characteristic sweet, musty odor and is moderately soluble in water while being miscible with most organic solvents. Iso Butanol is primarily produced through the oxo synthesis process, also known as hydroformylation, which involves the reaction of propylene with synthesis gas (carbon monoxide and hydrogen) in the presence of a catalyst. It can also be produced through fermentation processes using genetically modified microorganisms, representing a bio-based production route gaining increased attention.

Iso Butanol Uses

Coatings, Paints, and Varnishes

Iso Butanol is extensively used as a solvent in the formulation of paints, lacquers, varnishes, and industrial coatings. It effectively dissolves various resins including acrylics, nitrocellulose, and amino resins, contributing to proper viscosity, flow characteristics, and film formation. The moderate evaporation rate of iso butanol allows for adequate leveling and prevents surface defects such as blushing and orange peel in coating applications. It is particularly valuable in automotive refinishing products, wood finishes, and industrial maintenance coatings where it helps achieve uniform coverage and professional-quality finishes. Iso butanol also serves as a coalescing agent in water-based coatings, improving film formation and enhancing the durability of latex paints and architectural coatings.

Chemical Synthesis and Intermediates

Iso Butanol serves as a crucial raw material in the production of various chemical intermediates and derivatives. It is used to manufacture isobutyl acetate, an important solvent for nitrocellulose and other resins used in coatings and printing inks. The esterification of iso butanol produces isobutyl esters that find applications in fragrances, flavors, and plasticizers. It is a key feedstock in the production of isobutyl methacrylate, which is polymerized to create specialty polymers for coatings and adhesives. Iso butanol is also utilized in synthesizing glycol ethers, amino resins, and various specialty chemicals. The compound’s reactivity and functional versatility make it valuable in pharmaceutical synthesis, agrochemical production, and the manufacture of performance chemicals.

Extraction and Purification Processes

In chemical processing and analytical applications, iso butanol is employed as an extraction solvent for separating and purifying various compounds. It is used in liquid-liquid extraction processes to isolate pharmaceuticals, natural products, and specialty chemicals from aqueous solutions. The compound’s partition coefficient makes it effective for extracting organic compounds while minimizing water co-extraction. Iso butanol is utilized in the petroleum industry for extracting aromatic compounds and in biotechnology for protein purification and cell disruption processes. In analytical chemistry laboratories, it serves as a solvent for sample preparation, chromatography, and spectroscopic analysis. The solvent’s selectivity and moderate polarity make it valuable in processes requiring precise separation of target compounds from complex mixtures.

Textile and Leather Processing

Iso Butanol is used in textile processing as a solvent for dyes, particularly disperse dyes and vat dyes used in synthetic fiber coloration. It helps improve dye penetration, color uniformity, and fixation on polyester and other synthetic fabrics. In textile printing operations, iso butanol serves as a carrier solvent that controls ink viscosity and drying characteristics. The leather industry employs iso butanol in finishing formulations where it dissolves resins, pigments, and other additives used to create protective and decorative leather finishes. It contributes to proper flow and leveling of finishing materials, resulting in uniform appearance and enhanced durability of finished leather goods. The compound’s compatibility with various finishing chemicals and moderate evaporation rate make it suitable for achieving professional-quality leather finishing results.

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