Ethanol (C2H5OH), designated by CAS number 64-17-5, is a clear, colorless, and highly volatile flammable liquid. Also known as ethyl alcohol or grain alcohol, it is a primary …
Versatile Solvency: Effectively dissolves both polar and non-polar substances, making it a universal solvent in laboratory and industrial settings.
Renewable Feedstock: Most industrial ethanol is “bioethanol,” derived from renewable agricultural sources, contributing to a lower carbon footprint compared to petroleum-based alternatives.
Broad-Spectrum Antimicrobial: Acts as a powerful disinfectant by denaturing proteins and dissolving lipid membranes of bacteria, viruses, and fungi.
Low Toxicity Profile: Compared to methanol or isopropyl alcohol, ethanol presents lower systemic toxicity in many industrial applications.
Low Freezing Point: With a freezing point of approximately -114°C, it is an ideal component for cooling systems and de-icing fluids.
Rapid Evaporation: High volatility ensures quick drying times in coatings, inks, and sanitizing products.
规格
技术亮点
Molecular Weight: 46.07 g/mol.
Boiling Point: 78.37°C (173.07°F) at 1 atm.
Density: 0.789 g/cm³ at 20°C.
Azeotropic Nature: Readily forms a constant-boiling mixture with water at 95.6% ethanol; absolute ethanol (99.9%+) requires specialized dehydration (e.g., molecular sieves).
Flash Point: ~13–14°C (55.4–57.2°F) closed cup, classifying it as a Class IB Flammable Liquid.
Vapor Pressure: 5.95 kPa at 20°C, contributing to its high volatility.
Refractive Index: 1.361, useful for purity verification via refractometry.
Acidity (pKa): Approximately 15.9, indicating very weak acidity.
