|Acrolein, low mole weight aldehyde containing a C=C solid bond, is a clear to
yellow, flammable, poisonous liquid with a disagreeable odor; boiling at 52.7 C;
soluble in water, alcohol, and ether; causing tears. This compound is unstable
in the absence of an inhibitor. It may form unstable peroxides. Acrolein
polymerizes exothermically on contact with acid, sulfur dioxide, alkali,
amine, metal salt, thiourea, oxidant and on exposure to light and heat.
Dimerization occurs at the higher temperature than 150 C when inhibited. Commercial
acrolein is produced by gas-phase oxidation of propene
in the presence of bismuth or molybdenum oxide. It is
also produced as a by-product during the production
of acrylic acid or acrylonitrile. Both acrylic acid
and acrylonitrile are produced from C 3 refinery.
Acrolein can be also obtained by dehydration of glycerol.
is used in formulating
herbicide and aquatic biocide, slimicide (especially in paper manufacturing),
military tear gas mixtures. It is utilized in manufacturing in organic compounds
(e.g. glycerine, plastics, polyurethane, polyester resins, methionine, allyl
compounds, acrylic acid, acrylates, perfumes and other esters. It is used in forming
suspensions of metals. Acrolein is capable of distorting enzyme
synthesis and occasionally used as a biocide for water treatment. Acrolein
is used to produce DL-methionine via
intermediate product methional (methylmercaptopropionaldehyde).
used as an animal feed additive. acrolein
is used to produce glutaraldehyde
containing two aldehyde groups via intermediate
product methoxydihydropyran, Glutaraldehyde
is used as a disinfectant and as a leather tanning
Structurally methyl acrolein is crotonaldehyde,
C-4 aldehyde containing a solid bond. It is a very reactive liquid.
The mixtures with air is highly flammable. This substance is a strong reducing
agent and reacts violently with oxidants and many other substances. It can
polymerize and can cause fire and explosion hazard. The vapour is severely
irritating to the skin, the respiratory tract and corrosive to eyes. Inhalation
of high concentrations may cause lung oedema and death eventually.
Crotonaldehyde is used as a denaturing agent with the addition to alcohol to
render it unfit for drinking, or the change in the physical properties of a
substance. It is used to detect gas leaks in pipes. The main use of
crotonaldehyde is to prepare sorbic acid and crotonic acid by oxidation. It is
used in the synthesis of n-butyl alcohol, butyraldehyde and its analogues, and
quinaldine. It is used in manufacturing oil soluble dyes, food colorants,
pharmaceuticals and pH indicators.