Acetaldehyde
SIAL/00070 - puriss. p.a., anhydrous, ≥99.5% (GC)
Synonym: Ethanal
CAS Number: 75-07-0
Empirical Formula (Hill Notation): C2H4O
Molecular Weight: 44.05
EC Number: 200-836-8
MDL Number: MFCD00006991
Linear Formula: CH3CHO
Product Type: Chemical
| assay | ≥99.5% (GC) |
| autoignition temp. | 365 °F |
| biological source | synthetic |
| bp | 21 °C (lit.) |
| cation traces | Al: ≤0.5 mg/kg |
| Ba: ≤0.1 mg/kg | |
| Bi: ≤0.1 mg/kg | |
| Ca: ≤0.5 mg/kg | |
| Cd: ≤0.05 mg/kg | |
| Co: ≤0.02 mg/kg | |
| Cr: ≤0.02 mg/kg | |
| Cu: ≤0.02 mg/kg | |
| Fe: ≤0.5 mg/kg | |
| K: ≤0.5 mg/kg | |
| Li: ≤0.1 mg/kg | |
| Mg: ≤0.1 mg/kg | |
| Mn: ≤0.02 mg/kg | |
| Mo: ≤0.1 mg/kg | |
| Na: ≤0.5 mg/kg | |
| Ni: ≤0.02 mg/kg | |
| Pb: ≤0.1 mg/kg | |
| Sr: ≤0.1 mg/kg | |
| Zn: ≤0.1 mg/kg | |
| density | 0.785 g/mL at 25 °C (lit.) |
| evapn. residue | ≤0.002% |
| expl. lim. | 60 % |
| form | liquid |
| grade | anhydrous |
| puriss. p.a. | |
| impurities | ≤0.5% free acid (as CH3COOH) |
| InChI | 1S/C2H4O/c1-2-3/h2H,1H3 |
| InChI key | IKHGUXGNUITLKF-UHFFFAOYSA |
| mp | −125 °C (lit.) |
| quality | anhydrous |
| Quality Level | 100  |
| refractive index | n |
| n |
|
| SMILES string | CC=O |
| storage temp. | 2-8°C |
| vapor density | 1.52 (vs air) |
| vapor pressure | 14.63 psi ( 20 °C) |
| Application: | Acetaldehyde may be used for the enzymatic synthesis of fatty acids. |
| Application: | It was used in the plasma polymerization for deposition of reactive aldehyde groups onto substrate, in a study to produce fibrous biomaterials with cell adhesive and also repulsive capability in biomedical applications. It was also used as calibration standard during determination of acetone, acetaldehyde, ethanol, and methanol in different human matrices, such as whole blood, vitreous humour, and urine using gas chromatography with flame ionization detection method (GC–FID). |
| Caution: | forms easily paraldehyde |
| General description: | Acetaldehyde is an organic colorless flammable liquid. It can be produced by hydration of acetylene and by catalytic oxidation of ethyl alcohol. It is mainly used in manufacturing acetic acid. |
| General description: | Mechanism of the thermal decomposition of acetaldehyde has been reported. It is a product of ethanol metabolism in the liver, binds covalently to various proteins, thereby alters the liver function and structure. The aldol condensation of acetaldehyde and heptanal in the presence of hydrotalcite-type catalysts has been described. |
| Symbol |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H224 - H319 - H335 - H341 - H350 |
| Precautionary statements | P202 - P210 - P233 - P305 + P351 + P338 - P308 + P313 - P403 + P233 |
| Hazard Codes | F+,Xn |
| Risk Statements | 12-36/37-40 |
| Safety Statements | 16-33-36/37 |
| RIDADR | UN1089 - class 3 - PG 1 - Acetaldehyde |
| WGK Germany | WGK 3 |
| Flash Point(F) | -38.0 °F - closed cup |
| Flash Point(C) | -38.89 °C - closed cup |
| Purity | ≥99.5% (GC) |
| bp | 21 °C (lit.) |
| mp | −125 °C (lit.) |
| Density | 0.785 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352100 |