CAS Number:
64-17-5
Chem/INCI Name:
Alcohol (Denat.) or Ethanol
Other Names:
Ethyl Alcohol, Absolute Alcohol, Grain Alcohol
Molecular Formula:
C2H6O
Molecular Weight:
46.07 g/mol
Uses:
It is a versatile solvent, disinfectant, and chemical intermediate.
· Personal Care & Cosmetics: Used as an antiseptic in hand sanitizers, a solvent for fragrances and extracts, and an astringent in toners and aftershaves.
· Pharmaceuticals: A key solvent and preservative in liquid medicines, tinctures, and disinfectants.
· Industrial & Laboratory: Essential solvent for coatings, inks, and chemical synthesis. Used as a processing agent in molecular biology and analytical chemistry.
· Consumer Products: Base ingredient for alcoholic beverages (when food-grade) and fuel.
Origin:
Ethanol is typically a synthetic chemical produced by the catalytic hydration of ethylene. It can also be produced via the natural fermentation of sugars from plant sources like corn or sugarcane (bio-ethanol).
What does Ethanol (≥99%) do in a formulation?
Its primary functions are:
- Solvent (Primary role)
- Antiseptic / Antimicrobial
- Astringent
- Preservative
Safety Profile:
· Hazard Classification: Highly flammable liquid and vapor. Causes serious eye irritation.
· Exposure Limits: Specific occupational limits exist due to flammability and potential central nervous system effects from inhalation.
· Toxicity: Toxic if ingested in significant quantities. Use in cosmetic and pharmaceutical products is strictly regulated.
· Handling: Requires storage away from ignition sources in well-ventilated areas. Use appropriate personal protective equipment (PPE).
Technical profile:
| Property | Values |
| Appearance | Colorless, clear liquid |
| Odor | Characteristic, mild alcoholic odor |
| Grade | Available in Technical, Absolute, and various reagent grades (e.g., ACS) |
| Assay/Purity | ≥99% - ≥99.5% |
| Boiling Point | 78 °C |
| Melting Point | -114 °C |
| Density | ~0.790 g/mL at 25°C |
| Refractive Index | ~1.360 (n20/D) |
| Vapor Pressure | 44.6 - 59 hPa at 20°C |
| Flash Point | 13 - 14 °C (55 - 57 °F) |
| Solubility | Miscible with water and many organic solvents |