00071

Acetaldehyde

ReagentPlus^®, ≥99.0% (GC)

• Synonym(s): Ethanal
• Linear Formula: CH₃CHO
• CAS Number: 75-07-0
• Molecular Weight: 44.05
• Beilstein: 505984
• EC Number: 200-836-8
• MDL number: MFCD00006991
• eCl@ss: 39021102
• PubChem Substance ID: 329746998
• NACRES: NA.21

Properties

• Quality Level: 200
• biological source: synthetic
• vapor density: 1.52 (vs air)
• vapor pressure: 14.63 psi ( 20 °C)
• product line: ReagentPlus^®
• assay: ≥99.0% (GC)
• form: liquid
• autoignition temp.: 365 °F
• expl. lim.: 60 %
• refractive index: n20/D 1.332 (lit.)
• bp: 21 °C (lit.)
• mp: −125 °C (lit.)
• density: 0.785 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: CC=O
• InChI: 1S/C2H4O/c1-2-3/h2H,1H3
• InChI key: IKHGUXGNUITLKF-UHFFFAOYSA-N

Description

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.

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.

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).

Acetaldehyde may be used for the enzymatic synthesis of fatty acids.

Caution

forms easily paraldehyde

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Safety Information

• Pictograms: 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 Classifications: Carc. 1B - Eye Irrit. 2 - Flam. Liq. 1 - Muta. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): -38.0 °F - closed cup
• Flash Point(C): -38.89 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves