Detailed Product Description:
Acetaldehyde is a flammable liquid, organic chemical compound.
It occurs naturally in ripe fruit, coffee, and bread, and is produced by
plants as part of their normal metabolism. It is popularly known for
its ability to cause hangovers.
This is Reagent Grade Material with a minimum purity of 99%.
Acetaldehyde is a common 2-carbon building block in organic synthesis.
Because of its small size and its availability as the anhydrous monomer
(unlike formaldehyde), it is a common electrophile. With respect to its
condensation reactions, acetaldehyde is prochiral. It is mainly used as a
source of the CH3C+H(OH) synthon in aldol and related condensation reactions.
Grignard reagents and organolithium compounds react to give hydroxyethyl
derivatives. In one of the more spectacular condensation reactions, three
equivalents of formaldehyde add to MeCHO to give pentaerythritol, C(CH2OH)4.
In a Strecker reaction, acetaldehyde condenses with cyanide and ammonia to give,
after hydrolysis, the amino acid alanine. Acetaldehyde can condense with amines
to yield imines, such as the condensation with cyclohexylamine to give
N-ethylidenecyclohexylamine. These imines can be used to direct subsequent
reactions like an aldol condensation. It is also an important building block for
the synthesis of heterocyclic compounds. A remarkable example is its conversion
upon treatment with ammonia to 5-ethyl-2-methylpyridine ("aldehyde-collidine”).
In the liver, the enzyme alcohol dehydrogenase converts ethanol into acetaldehyde,
which is then further converted into harmless acetic acid by acetaldehyde dehydrogenase.
The last steps of alcoholic fermentation in bacteria, plants and yeast involve the
conversion of pyruvate into acetaldehyde by the enzyme pyruvate decarboxylase,
followed by the conversion of acetaldehyde into ethanol. The latter reaction is again
catalyzed by an alcohol dehydrogenase, now operating in the opposite direction.
Acetaldehyde is a significant constituent of tobacco smoke. It has been demonstrated
to have a synergistic effect with nicotine, increasing the onset and tenacity of addiction
to cigarette smoking, particularly in adolescents.
Unstable in air. May undergo autopolymerization. Forms explosive peroxides
on prolonged storage and exposure to air. Polymerizes violently in the presence of
traces of metals or acids. Toxic when applied externally for prolonged periods, an
irritant, and a probable carcinogen. In addition, acetaldehyde is damaging
to DNA and causes abnormal muscle development as it binds to proteins.
Acetaldehyde is an air pollutant resulting from combustion, such as automotive
exhaust and tobacco smoke. It is also created by thermal degradation of
polymers in the plastics processing industry.
Flammable, dangerous fire risk, moderately toxic by skin absorption and
inhalation. Download, read, and understand precautions described in Material
Safety Data Sheet.
Click here to download MSDS (Material Safety Data Sheet)
Comes packed in 250ml boston round, amber glass bottle.