Acetaldehyde (CAS 75-07-0) is a volatile, highly reactive aldehyde with a sharp odor, supplied as a solution, and it serves as an intermediate in chemical synthesis and industrial oxidation processes, including the manufacture of acetic acid, pentaerythritol, pyridines and fragrances.
Typical Properties
| Molecular formula | C2H4O |
|---|---|
| Molecular weight | 44.05 g/mol |
| Form | solution |
| Color | White to off-white |
| Odor | Pungent, fruity odor detectable at 0.0068 to 1000 ppm (mean = 0.067 ppm) |
| Melting point | -123.5 °C |
| Boiling point | 21 °C |
| Density | 0.788 g/cm³ @ Temp: 16 °C |
| Water solubility | > 500 g/L (20 °C) |
| Flash point | 133 °F |
| pH | 5 (10g/l, H2O, 20°C) |
| GHS signal word | Danger · Flammable, Acute toxicity, Irritant / harmful, Health hazard |
| HS code | 29121200 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Acetaldehyde
Applications
Used in the manufacture of acetic acid, pentaerythritol, pyridines, and fragrances. It also acts as a flavoring component and solvent in controlled applications.
Safety & Risks
Highly flammable and irritant; harmful by inhalation and classified as a potential carcinogen. Handle in explosion-proof systems under inert gas.
Packaging
Delivered in stabilized form within stainless steel or aluminum drums under nitrogen. Store refrigerated in well-ventilated flammable liquid storage areas.