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2-Butanol Pure
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Description
2-Butanol
Other Names: sec-Butanol, sec-Butyl alcohol, 2-Butyl alcohol
CAS Number: 78-92-2
Sum Formula: C₄H₁₀O
Molar Mass: 74.12 g/mol
Appearance: Colorless, flammable liquid
2-Butanol is a secondary alcohol with the hydroxyl group attached to the second carbon of a butyl chain. It is a structural isomer of butanol and exhibits both polar and nonpolar solvent characteristics. It is widely used in chemical synthesis, industrial processing, and solvent applications.
Chemical and Physical Properties
Density: 0.808 g/cm³ (at 20°C)
Melting Point: –115°C
Boiling Point: 99.5°C
Solubility in Water: Miscible
Solubility in Other Solvents: Miscible with alcohol, ether, and most organic solvents
Odor: Characteristic alcoholic odor
Applications
Solvent: Used in paints, coatings, adhesives, and chemical formulations.
Intermediate: In the production of butanone (MEK), esters, and plasticizers.
Extraction Agent: Utilized in industrial extraction processes.
Laboratory Use: Common organic solvent for reactions and extractions.
Safety
Signal Word: Danger
H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]
H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (95.5%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
H336 (100%): May cause drowsiness or dizziness [Warning Specific target organ toxicity, single exposure; Narcotic effects]
P210, P233, P240, P241, P242, P243, P261, P264+P265, P271, P280, P303+P361+P353, P304+P340, P305+P351+P338, P319, P337+P317, P370+P378, P403+P233, P403+P235, P405, and P501
Handling and Storage
Storage Conditions: Store in a cool, dry, and well-ventilated area away from ignition sources and oxidizing agents.
Handling Precautions: Avoid inhalation and contact with eyes or skin. Use explosion-proof equipment and handle under fume hood if necessary.