1,4-Dioxan for UV
| Formula | C4H8O2 |
| Density | 1.03 g/cm3 |
| Molar mass | 88.11 g/mol |
| CAS number | 123-91-1 |
| HS Code | 29329985 |
| EC number | 204-661-8 |
| Storage | Store at +15 to +25 °C |
| SDS | available |
| RTECS | JG8225000 |
| R phrase | R 11-19-36/37-40-66 |
| S phrase | S 9-16-36/37-46 |
| Odour | ether -like |
| Form | liquid |
| Color | colourless |
| p H value | 6.0 – 8.0(500 g/l 20°C) |
| Solubility in water | soluble (20°c) |
| Explosion limit | 1.7 to 25.2 vol% |
| Ignition temperature | 300 °C |
| Flash point | 11 °C |
| Boiling point | 101.5 °C |
| Melting point | 12 °C |
| Vapour pressure | 41 hPa(20°C) |
| Viscosity dynamical | 1.32 mPa*s(20°C) |
| Saturation concentration | 149 g/m3(20°C) |
1,4-Dioxane for UV is a high-purity, low-absorbance solvent specifically refined for ultraviolet (UV) and spectrophotometric applications in pharmaceutical and analytical laboratories, providing a clear medium for precise optical measurements.
🏭⚗️ Production
It is purified through fractional distillation and filtration to remove moisture, peroxides, and UV-absorbing impurities, then packaged under inert, moisture-controlled conditions to maintain chemical stability and optical clarity.
🔬 Properties
1,4-Dioxane is a clear, colorless, volatile liquid with a faint ether-like odor. It is miscible with water and many organic solvents, has a boiling point of ~101 °C, and exhibits minimal UV absorbance above 215 nm, making it suitable for UV–Vis spectroscopy of non-polar and moderately polar compounds.
🧪 Applications
Used as a solvent for preparation of calibration standards, reference solutions, and assay samples in pharmaceutical and analytical laboratories, it dissolves a wide range of organic compounds and provides stable, reproducible UV spectra.
⚠️ Safety
1,4-Dioxane is toxic if inhaled, ingested, or absorbed through the skin and may affect the liver and kidneys. It is also a potential carcinogen. Handling requires a fume hood, gloves, goggles, and protective clothing. Containers must be tightly sealed and stored in a cool, ventilated area, and waste must be disposed of according to hazardous laboratory protocols.
