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00070 Sigma-Aldrich

Acetaldehyde

puriss. p.a., anhydrous, ≥99.5% (GC)

Synonym: Ethanal

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Properties

Related Categories A-B, Puriss p.a., Acacia, Aldehydes, Allium sativum (Garlic), Analytical Reagents,
biological source   from synthetic
grade   anhydrous
vapor density   1.52 (vs air)
vapor pressure   14.63 psi ( 20 °C)
InChI Key   IKHGUXGNUITLKF-UHFFFAOYSA-N
grade   puriss. p.a.
assay   ≥99.5% (GC)
autoignition temp.   365 °F
quality   anhydrous
expl. lim.   60 %
impurities   ≤0.5% free acid (as CH3COOH)
evapn. residue   ≤0.002%
refractive index   n20/D 1.332(lit.)
  n20/D 1.332
bp   21 °C(lit.)
mp   −125 °C(lit.)
density   0.785 g/mL at 25 °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
storage temp.   2-8°C

Description

Caution

forms easily paraldehyde

Application

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).

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.

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.

Price and Availability


All labs need water
Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN1089 - class 3 - PG 1 - Acetaldehyde
WGK Germany 
1
RTECS 
AB1925000
Flash Point(F) 
-40 °F
Flash Point(C) 
-40 °C

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles

Articles

EPA Method TO-11/IP-6A and ASTM® D5197: HPLC Analysis of Aldehydes and Ketones on SUPELCOSIL™ LC-18 after Collection/Desorption using LpDNPH

From our library of Articles, Sigma-Aldrich presents EPA Method TO-11/IP-6A and ASTM® D5197: HPLC Analysis of Aldehydes and Ketones on SUPELCOSIL™ LC-18 after Collection/Desorption using LpDNPH
Keywords: Air Monitoring, Chromatography, High performance liquid chromatography, Sample preparations, Solid phase extractions

GC Analysis of Alcoholic Spirit on Equity®-1 °Coupled to SUPELCOWAX 10 (Column Set 2)

From our library of Articles, Sigma-Aldrich presents GC Analysis of Alcoholic Spirit on Equity®-1 °Coupled to SUPELCOWAX 10 (Column Set 2)
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification, Size-exclusion chromatography

GC Analysis of Blood Alcohols in Human Plasma on SUPELCOWAX® 10 after SPME using 60 μm Carbowax® Fiber

From our library of Articles, Sigma-Aldrich presents GC Analysis of Blood Alcohols in Human Plasma on SUPELCOWAX® 10 after SPME using 60 μm Carbowax® Fiber
Keywords: Chromatography, Clinical, Flame ionization detector, Forensic, Gas chromatography, Pharmaceutical, Purification, Solid phase microextractions

GC Analysis of Blood Alcohols on SUPELCOWAX® 10

From our library of Articles, Sigma-Aldrich presents GC Analysis of Blood Alcohols on SUPELCOWAX® 10
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification

GC Analysis of Blood Alcohols on a Packed Column (5% Carbowax® 20M on 60/80 °Carbopack™ B)

From our library of Articles, Sigma-Aldrich presents GC Analysis of Blood Alcohols on a Packed Column (5% Carbowax® 20M on 60/80 °Carbopack™ B)
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification

GC Analysis of Fermentation Compounds on a Packed Column (6.6% Carbowax® 20M on 80/120 °Carbopack™ B AW)

From our library of Articles, Sigma-Aldrich presents GC Analysis of Fermentation Compounds on a Packed Column (6.6% Carbowax® 20M on 80/120 °Carbopack™ B AW)
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification

GC Analysis of Scotch Whiskey on a Packed Column (5% Carbowax® 20M on 80/120 °Carbopack B)

From our library of Articles, Sigma-Aldrich presents GC Analysis of Scotch Whiskey on a Packed Column (5% Carbowax® 20M on 80/120 °Carbopack B)
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification

GC Analysis of Scotch Whiskey on a Packed Column (6.6% Carbowax® 20M on 80/120 °Carbopack B AW)

From our library of Articles, Sigma-Aldrich presents GC Analysis of Scotch Whiskey on a Packed Column (6.6% Carbowax® 20M on 80/120 °Carbopack B AW)
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Purification

Pyruvate Transformations

Depending on the environmental conditions, e.g. whether oxygen is present or not, pyruvate, a product of glucose metabolism, can undergo different biotransformations as shown in Figure 2. Under reduc...
BioFiles 2007, 2.6, 10.
Keywords: Anaerobic, Biofiles, Catalysis, Environmental, Metabolism

Peer-Reviewed Papers
15

References

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