1,4-Dioxane
CAS 123-91-1C4H8O288.11 g/mol
1,4-dioxane is a dioxane with oxygen atoms at positions 1 and 4. It has a role as a metabolite, a non-polar solvent and a carcinogenic agent. It is a volatile organic compound and a dioxane.
IUPAC: 1,4-dioxane
PubChem
Physical & Chemical Properties
| Melting Point | 53.2 °F (NTP, 1992) |
| Boiling Point | 214 °F at 760 mmHg (NTP, 1992) |
| Density | 1.036 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | greater than or equal to 100 mg/mL at 68 °F (NTP, 1992) |
| Flash Point | 54 °F (NTP, 1992) |
| Vapor Pressure | 29 mmHg at 68 °F ; 37 mmHg at 77 °F (NTP, 1992) |
| Appearance | Dioxane appears as a clear colorless liquid with a faint ethereal odor. Flash point 55 °F. Slightly denser than water and soluble in water. Vapors heavier than air. Susceptible to autooxidation to form peroxides. |
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): 2932
Data: UN Comtrade
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