676934

1,4-Dioxane

ACS reagent, ≥99.0%

• Synonym(s): Diethylene oxide, Dioxane
• Empirical Formula (Hill Notation): C₄H₈O₂
• CAS Number: 123-91-1
• Molecular Weight: 88.11
• Beilstein: 102551
• EC Number: 204-661-8
• MDL number: MFCD00006571
• UNSPSC Code: 12352005
• PubChem Substance ID: 329760662
• NACRES: NA.21

Properties

• grade: ACS reagent
• vapor density: 3 (vs air)
• vapor pressure: 27 mmHg ( 20 °C); 40 mmHg ( 25 °C)
• Assay: ≥99.0%
• form: liquid
• autoignition temp.: 356 °F
• expl. lim.: 22 %
• technique(s): thin layer chromatography (TLC): suitable
• impurities: ≤0.0016 meq/g Titr. acid; ≤0.005% Peroxide as (H₂O₂); ≤0.01% Carbonyl (as HCHO); ≤0.05% water
• evapn. residue: ≤0.005%
• color: APHA: ≤20
• refractive index: 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: freezing point ≥11.0
• density: 1.034 g/mL at 25 °C (lit.)
• 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.

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.

Safety Information

• Pictograms: GHS02,GHS08,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H319,H335,H350
• Precautionary Statements: 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
• Supplementary Hazards: EUH019,EUH066
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 51.8 °F - closed cup
• Flash Point(C): 11 °C - closed cup