2-butanol
Description
2-Butanol (CAS 78-92-2), also sold as sec-butanol and sec-butyl alcohol, is a mid-chain secondary alcohol used primarily as an industrial solvent and chemical intermediate.
Its secondary hydroxyl structure makes it a practical building block for producing methyl ethyl ketone (MEK) and other downstream chemicals. Buyers source it across food, personal care, and polymer manufacturing.
In flavor applications, 2-butanol contributes to the production of FEMA-listed flavor compounds and serves as a solvent carrier in fragrance formulations.
Polymer and coatings manufacturers use it as a reactive solvent in curing and cross-linking systems, where controlled evaporation rate affects film formation.
Personal care formulators incorporate it as a solvent for resins, fixatives, and active ingredients in aerosol and leave-on products for various applications.
It also functions as a stabilizer in certain chemical processes where secondary alcohols are preferred over primary alternatives to limit over-oxidation during the reaction.
2-Butanol is supplied as a clear liquid in drum, IBC, and bulk tanker quantities. Technical grade is the most common commercial specification for industrial use.
Food-grade material is available for flavor and fragrance applications. Buyers should confirm grade suitability against FCC standards depending on end-use requirements.
Physical Properties
| Melting Point | -114 °C |
| Boiling Point | 99.5 °C |
| Density | 0.8063 g/cm³ @ Temp: 20 °C |
| Flash Point | 80 °F |
| Appearance | Colourless liquid |
| Color | Colorless |
| Odor | Strong, pleasant. |
| Form | Liquid |
| Water Solubility | 12.5 g/100 mL (20 ºc) |
| Vapor Pressure | 12.5 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.397(lit.) |
| pH | 7 (20°C) |
| Log P | 0.610 |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29051490 |
| UN Number | 1120 |
| ADR Class | 3 |
| Packing Group | III |
| WGK (Germany) | 1 |
Documentation
Other Names
sec-butyl alcohol|sec-butanol|s-butyl alcohol|methyl ethyl carbinol|ethyl methyl carbinol|butanol-2|2-hydroxybutane|2-butyl alcohol
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