Butyraldehyde


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butyraldehyde

[¦byüd·ər′al·də‚hīd]
(organic chemistry)
CH3(CH2)2CHO A colorless liquid boiling at 75.7°C; soluble in ether and alcohol, insoluble in water; derived from the oxo process.

Butyraldehyde

 

a saturated aliphatic aldehyde; a colorless liquid with a sharp, unpleasant odor, readily soluble in organic solvents but exhibiting only limited solubility in water.

Butyraldehyde has two known isomers: n-butyr aldehyde, or butanal, CH3CH2CH2CHO (boiling point, 74.8°C; density, 0.802 g/cm3 at 20°C), and isobutyraldehyde, or isobutanal, (CH3)2CHCHO (boiling point, 64°C; density, 0.794 g/cm3 at 20°C). The η-butyraldehyde is of practical value in the preparation of polyvinylbutyral, which is widely used in the manufacture of laminated safety glass, BF adhesives, varnishes, and enamels.

The commercial production of n-butyraldehyde usually involves the reduction of crotonaldehyde. Less often, it is produced by the dehydrogenation of n-butanol or the oxidation of n- butane.

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Above 260[degrees]C, the major products of decomposition were initially butyraldehyde and butenal, which were obtained by elimination of butyral groups.
Butyraldehyde is an intermediate in the production of butanol and 2-ethylhexanol.
The second largest sales market propylene is the production of propylene oxide, followed by the manufacturing of acrylonitrile, butyraldehyde, cumene, and acrylic acid, according to Ceresana.
The enzyme showed no activity towards 4-aminobutyraldehyde, betainealdehyde, acetaldehyde, propionaldehyde, butyraldehyde, isovaleraldehyde and pivaleraldehyde.
Originally, beginning in 1991, only formaldehyde was determined; however, beginning in 1995 six additional carbonyls (acetaldehyde, acetone, benzaldehyde, butyraldehyde, crotonaldehyde, and propionaldehyde) were determined.
The following chemicals were obtained from Aldrich: butyraldehyde, hexyl aldehyde, octyl aldehyde, decyl aldehyde, dodecyl aldehyde, tetradecyl aldehyde, ethyl bromoacetate, and mossy zinc.
Direct applications include, besides the plastic polypropylene, chemicals such as propylene oxide, acrylonitrile, cumene, butyraldehyde and acrylic acid.
The primary markets affected would be the markets for butyraldehyde, butanol, softner 2-ethylhexanol and solvent butyl acetate.
Butyralizations were performed with identical reagent loadings to methanolysis, with butyraldehyde (Aldrich, 99.
Output of the new butyraldehyde unit will also be used by JCIC to feed an existing 70,000 metric-ton oxo alcohol unit.
Butyraldehyde, manufactured from propylene using oxo synthesis, is processed directly in to the oxo-alcohols butanol and 2-ethylhexanol in the USA.
In support of the 2-EH expansion, a 25,000 metric ton expansion of butyraldehyde will also occur at the site.