sec-Butanol (2-Butanol) 99% / 99.5% CAS No. 78-92-2 Industrial & Pharmaceutical Grade

sec-Butanol, available in 99% and 99.5% concentrations, is produced via direct hydration of n-butene using proprietary catalysts or through sulfuric acid absorption of butenes followed by hydrolysis . It features excellent solvency power, moderate evaporation rate, and partial miscibility with water while being completely miscible with most organic solvents . As a secondary alcohol with a chiral structure, it is widely used as a chemical intermediate for methyl ethyl ketone (MEK) production, as a solvent in coatings and industrial cleaners, and in pharmaceutical applications . Its high purity and consistent quality make it ideal for critical applications requiring precise solvent properties. Each batch is rigorously tested using GC analysis to ensure consistent quality meeting industrial and pharmaceutical standards.

Scope of Application
· Used as the primary raw material for methyl ethyl ketone (MEK) production through dehydrogenation, with approximately 90% of sec-butanol utilized for this application ;
· Acts as a solvent in paints, coatings, nitrocellulose lacquers, and paint removers, enhancing processing and extending workability ;
· Functions as an anti-emulsifier, dye dispersant, dehydrating agent, and industrial cleaner in various manufacturing processes ;
· Widely applied in the pharmaceutical industry as a solvent for drug formulations and synthesis of active pharmaceutical ingredients (APIs) ;
· Used in the production of butyl acetate, sec-butyl esters, plasticizers, and flotation agents for ore processing ;
· Serves as an extraction agent for fish meal processing to produce fish protein concentrate ;
· Acts as a solvent and intermediate in the manufacture of perfumes, artificial flavors, and fruit essences ;
· Functions as a laboratory reagent for analytical chemistry and as a reference standard for chromatography ;
· Used in the preparation of herbicides and as a wetting agent in agricultural formulations ;
· Serves as a component in hydraulic fluids and as an anti-icing additive in fuels.

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Product Features

sec-Butanol is manufactured using advanced hydration and fractionation technologies, ensuring consistent quality and precise purity control. The product features excellent solvency for a wide range of organic compounds, oils, and resins, with a boiling point of 98-100°C providing optimal evaporation characteristics for coating and solvent applications . Its molecular weight of 74.12 g/mol and specific gravity of 0.806-0.809 at 20°C offer predictable handling properties . The product exhibits partial miscibility with water (12.5% at 20°C) while being completely miscible with ethanol, ether, acetone, and aromatic hydrocarbons .

Packaging and Transportation

· Available in epoxy-lined steel drums (160kg-165kg), IBC totes, and ISO tanks;

· Classified as flammable liquid (Class 3), comply with all transportation safety regulations including UN1120 classification with Packing Group III ;

Safety and Storage

✦ The product should be stored in a cool and ventilated warehouse and kept away from kindling and heat sources.

✦ It should be stored separately from oxidants and acids, and is prohibited to mix them in storage.

✦ The warehouse should be equipped with corresponding varieties and quantities of fire-fighting equipment.

✦ The storage area should be equipped with emergency treatment equipment for leakage and appropriate containment materials.

Product display

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FAQ

What are the main differences between the 99% and 99.5% purity grades of sec-Butanol?

The 99% grade is suitable for most industrial applications including MEK production, solvent use in coatings, and general chemical synthesis, offering cost-effectiveness. The 99.5% anhydrous grade provides higher purity with stricter control over water content (<0.005% vs. <0.2%), specifically engineered for sensitive applications including pharmaceutical synthesis, moisture-sensitive reactions, and high-precision laboratory use where minimal impurities are critical for consistent results .

What is the primary industrial application of sec-Butanol?

Approximately 90% of sec-butanol is utilized as a chemical intermediate for the production of methyl ethyl ketone (MEK) through catalytic dehydrogenation . MEK is a widely used industrial solvent in paints, adhesives, printing inks, and surface coatings. The remaining 10% is used directly as a solvent and intermediate in various other applications including pharmaceutical manufacturing, ester production, and extraction processes.

How does sec-Butanol compare to other butanol isomers (n-butanol, isobutanol, tert-butanol)?

The four butanol isomers differ in the position of the hydroxyl group, which affects their physical properties and reactivity. sec-Butanol (2-butanol) is a secondary alcohol with the hydroxyl group on an internal carbon, giving it unique oxidation characteristics (forming ketones rather than aldehydes). Its boiling point (99.5°C) is intermediate between n-butanol (118°C) and tert-butanol (82°C). It has higher water solubility (12.5%) than n-butanol (7.7%) but lower than tert-butanol (miscible). These properties make sec-butanol particularly valuable for specific applications where secondary alcohol reactivity is desired .