2-butanol

CAS Number
78-92-2
EC Number
201-158-5
Chemical Formula
C4H10O
Molecular Weight
74.12 g/mol

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.

Other Names (Synonyms)

sec-butyl alcohol|sec-butanol|s-butyl alcohol|methyl ethyl carbinol|ethyl methyl carbinol|butanol-2|2-hydroxybutane|2-butyl alcohol

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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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

Documentation

Safety & Handling Learn More

Warning
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H226 Flammable liquid and vapor
H303 May be harmful if swallowed
H319 Causes serious eye irritation
H332 Harmful if inhaled

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.

Trade & Regulatory

HS Code 29051490
UN Number 1120
ADR Class 3
Packing Group III
WGK (Germany) 1
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