00070
Acetaldehyde
puriss. p.a., anhydrous, ≥99.5% (GC)
Synonym(s):
Ethanal
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About This Item
Linear Formula:
CH3CHO
CAS Number:
Molecular Weight:
44.05
Beilstein/REAXYS Number:
505984
EC Number:
MDL number:
UNSPSC Code:
12352100
eCl@ss:
39021102
PubChem Substance ID:
NACRES:
NA.21
biological source
synthetic
Quality Level
grade
anhydrous
puriss. p.a.
vapor density
1.52 (vs air)
vapor pressure
14.63 psi ( 20 °C)
assay
≥99.5% (GC)
form
liquid
autoignition temp.
365 °F
quality
anhydrous
expl. lim.
60 %
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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.
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).
Caution
forms easily paraldehyde
signalword
Danger
hcodes
Hazard Classifications
Carc. 1B - Eye Irrit. 2 - Flam. Liq. 1 - Muta. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
3 - Flammable liquids
wgk_germany
WGK 3
flash_point_f
-38.0 °F - closed cup
flash_point_c
-38.89 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves
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