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(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.



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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Maximum concentration was recorded for trans-2-hexen-1-ol and was followed by butanal (Fig.
These were trans-2-hexen-1-ol, 1-heptanal, octanal, 3-octanol, 2-nonanone, decanal, 2-undecanone, butanal, hexadecane.
These were 3-methyl-1-butanol, hexanal, 1-heptanal, octanal, 2-nonanone, decanal, 2-undecanone, butanal and hexadecane.
These were 3-methyl-1-butanal, hexanal, 2-nonanone, decanal, 2-undecanone, butanal and hexadecane.
The compounds were found to be hexadecane, 3-octanol, hexanal, pentadecane, 3-hexene-1-ol, 2-undecanone, 2-heptanone, butanal, 2-nonanone, 1-heptanal, furaldehyde, 3-methyl-1-butanal, trans-3-hexene-1-ol, octanal and decanal were the major volatile organic compounds in these species.
Combining the information of the IR spectrum and GC/MS results, we conclude that butanal, 2-butenal, acetic acid, butanoic acid, 1-butanol, water, and C[O.
2], butanal, butenal, acetic acid, butanoic acid, and butanol are the major products of thermal oxidative degradation of PVB.
The overall kinetic parameters were taken as the values of butanal since it is the most abundant product of degradation.
At the same time, breakage of B-I and B-III or B-II and B-IV bonds causes the formation of butanal and butanol, as shown in Fig.