00070

Acetaldeído

puriss. p.a., anhydrous, ≥99.5% (GC)

• Sinônimo(s): Etanal
• Fórmula linear: CH₃CHO
• Número CAS: 75-07-0
• Peso molecular: 44.05
• Beilstein: 505984
• Número CE: 200-836-8
• Número MDL: MFCD00006991
• Código UNSPSC: 12352100
• eCl@ss: 39021102
• ID de substância PubChem: 329746997
• NACRES: NA.21

Propriedades

• fonte biológica: synthetic
• Nível de qualidade: 100
• grau: anhydrous; puriss. p.a.
• densidade de vapor: 1.52 (vs air)
• pressão de vapor: 14.63 psi ( 20 °C)
• Ensaio: ≥99.5% (GC)
• Formulário: liquid
• temperatura de autoignição: 365 °F
• qualidade: anhydrous
• Lim. expl.: 60 %
• Impurezas: ≤0.5% free acid (as CH₃COOH)
• resíduo de evaporação: ≤0.002%
• índice de refração: n20/D 1.332 (lit.); n20/D 1.332
• p.e.: 21 °C (lit.)
• pf: −125 °C (lit.)
• densidade: 0.785 g/mL at 25 °C (lit.)
• traços de cátion: 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
• grupo funcional: aldehyde
• cadeia de caracteres SMILES: CC=O
• temperatura de armazenamento: 2-8°C
• InChI: 1S/C2H4O/c1-2-3/h2H,1H3
• chave InChI: IKHGUXGNUITLKF-UHFFFAOYSA-N

Descrição

Descrição geral

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.

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.

Aplicação

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

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).

Atenção

forms easily paraldehyde

Informações de segurança

• Pictogramas: GHS02,GHS08,GHS07
• Palavra indicadora: Danger
• Frases de perigo: H224,H319,H335,H341,H350
• Declarações de precaução: P202 - P210 - P233 - P305 + P351 + P338 - P308 + P313 - P403 + P233
• Classificações de perigo: Carc. 1B - Eye Irrit. 2 - Flam. Liq. 1 - Muta. 2 - STOT SE 3
• Órgãos-alvo: Respiratory system
• Código de classe de armazenamento: 3 - Flammable liquids
• Classe de risco de água (WGK): WGK 3
• Ponto de fulgor (°F): -38.0 °F - closed cup
• Ponto de fulgor (°C): -38.89 °C - closed cup
• Equipamento de proteção individual: Eyeshields, Faceshields, Gloves