34944

1,4-Dioxane

puriss. p.a., dried, ≥99.5% (GC), ≤0.005% water

• Synonym(s): Diethylene oxide, Dioxane
• Empirical Formula (Hill Notation): C₄H₈O₂
• CAS Number: 123-91-1
• Molecular Weight: 88.11
• Beilstein/REAXYS Number: 102551
• EC Number: 204-661-8
• MDL number: MFCD00006571
• UNSPSC Code: 12352005
• PubChem Substance ID: 329755095

Properties

• vapor density: 3 (vs air)
• vapor pressure: 27 mmHg ( 20 °C); 40 mmHg ( 25 °C)
• grade: puriss. p.a.
• assay: ≥99.5% (GC)
• form: liquid
• autoignition temp.: 356 °F
• quality: dried
• contains: ~25 mg/L 2,6-di-tert.-butyl-4-methylphenol as stabilizer
• expl. lim.: 22 %
• impurities: ≤0.001% free acid (as CH₃COOH); ≤0.001% free alkali (as NH₃); ≤0.001% non-volatile matter; ≤0.005% acetaldehyde; ≤0.005% peroxides (as H₂O₂); ≤0.005% water (Karl Fischer); ≤0.005% water; ≤0.01% carbonyl compounds (as HCHO)
• refractive index: n20/D 1.4210-1.4240; n20/D 1.422 (lit.)
• pH: 6.0-8 (20 °C, 500 g/L)
• bp: 100-102 °C (lit.)
• mp: 10-12 °C (lit.)
• transition temp: solidification point ≤11 °C
• density: 1.034 g/mL at 25 °C (lit.)
• cation traces: Al: ≤0.5 mg/kg; B: ≤0.02 mg/kg; Ba: ≤0.1 mg/kg; Ca: ≤0.5 mg/kg; Cd: ≤0.05 mg/kg; Co: ≤0.02 mg/kg; Cr: ≤0.02 mg/kg; Cu: ≤0.02 mg/kg; Fe: ≤0.1 mg/kg; Mg: ≤0.1 mg/kg; Mn: ≤0.02 mg/kg; Ni: ≤0.02 mg/kg; Pb: ≤0.1 mg/kg; Sn: ≤0.1 mg/kg; Zn: ≤0.1 mg/kg
• SMILES string: C1COCCO1
• InChI: 1S/C4H8O2/c1-2-6-4-3-5-1/h1-4H2
• InChI key: RYHBNJHYFVUHQT-UHFFFAOYSA-N

Description

General description

1,4-Dioxane is widely used as a solvent for various organic compounds in industry. It is a non-biodegradable contaminant found in industrial effluents. Its oxidative degradation by using oxygen and ozone has been useful in converting it into biodegradable products, which can be easily removed by conventional methods.[1]

Application

1,4-Dioxane may be employed as solvent in the synthesis of N-(4-(prop-2-ynyloxy)phenyl)acetamide and 3-(4-(prop-2-ynyloxy)phenyl)-3,4-dihydro-2H-benzo[e][1,3]oxazine.[2]

Safety Information

• pictograms: GHS02,GHS08,GHS07
• signalword: Danger
• hcodes: H225,H319,H335,H350
• pcodes: P202 - P210 - P233 - P240 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Carc. 1B - Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3
• target_organs: Respiratory system
• supp_hazards: EUH019,EUH066
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 51.8 °F - closed cup
• flash_point_c: 11 °C - closed cup