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00071 Sigma-Aldrich

Acetaldehyde

ReagentPlus®, ≥99.0% (GC)

Synonym: Ethanal

  • CAS Number 75-07-0

  • Linear Formula CH3CHO

  • Molecular Weight 44.05

  •  Beilstein Registry Number 505984

  •  EC Number 200-836-8

  •  MDL number MFCD00006991

  •  PubChem Substance ID 329746998

  •  eCl@ss 39021102

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Properties

Related Categories Aldehydes, Building Blocks, C1 to C6, Carbonyl Compounds, Chemical Synthesis,
biological source   from synthetic
grade   ReagentPlus®
vapor density   1.52 (vs air)
vapor pressure   14.63 psi ( 20 °C)
InChI Key   IKHGUXGNUITLKF-UHFFFAOYSA-N
assay   ≥99.0% (GC)
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

Description

Caution

forms easily paraldehyde

Other Notes

Same product — same quality — now Sigma-Aldrich brand

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.

Legal Information

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

Price and Availability

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
Protocols & Articles

Articles

Aldol Condensation Reaction

The aldol condensation is an organic reaction introduced by Charles Wurtz, who first prepared the β-hydroxy aldehyde from acetaldehdye in 1872.1 In an aldol condensation, an enolate ion reacts with a...
Keywords: Addition reactions, Aldol condensation, Aldol reaction, Alkylations, Antibiotics, Asymmetric synthesis, Catalysis, Condensations, Dehydration reaction, Eliminations, Etherifications, Iodinations, Michael Addition, Rearrangements, Suzuki coupling

Peer-Reviewed Papers
15

References

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