2-Butanol
CAS 78-92-2C4H10O74.12 g/mol
Butan-2-ol is a secondary alcohol that is butane substituted by a hydroxy group at position 2. It derives from a hydride of a butane.
IUPAC: butan-2-ol
PubChem
Physical & Chemical Properties
| Melting Point | -175 °F (NIOSH, 2024) |
| Boiling Point | 211 °F at 760 mmHg (NIOSH, 2024) |
| Density | 0.81 (NIOSH, 2024) - Less dense than water; will float |
| Solubility | 16 % (NIOSH, 2024) |
| Flash Point | 75 °F (NIOSH, 2024) |
| Vapor Pressure | 12 mmHg (NIOSH, 2024) |
| Appearance | Sec-butyl alcohol appears as a clear colorless liquid with an alcohol odor. Flash point below 0 °F. Less dense than water. Vapors heavier than air. Soluble in water. Moderately irritates the eyes and skin. Prolonged and repeated contact may cause defatting and drying of the skin. Vapors may irritate the nose, throat and respiratory tract. May be harmful by ingestion. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2905
Data: UN Comtrade
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