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benzaldehyde

benzaldehyde (bĕnzăl´dəhīd) or benzenecarbonal (bĕn´zēnkär´bənəl), C6H5CHO, colorless liquid aldehyde with a characteristic almond odor. It boils at 180°C, is soluble in ethanol, but is insoluble in water. It is formed by partial oxidation of benzyl alcohol, and on oxidation forms benzoic acid. It is called oil of bitter almond, since it is formed when amygdalin, a glucoside present in the kernels of bitter almonds and in apricot pits, is hydrolyzed, e.g., by crushing the kernels or pits and boiling them in water; glucose and hydrogen cyanide (a poisonous gas) are also formed. It is also prepared by oxidation of toluene or benzyl chloride or by treating benzal chloride with an alkali, e.g., sodium hydroxide. Benzaldehyde is used in the preparation of certain aniline dyes and of other products, including perfumes and flavorings.

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"benzaldehyde." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 25 May. 2017 <http://www.encyclopedia.com>.

"benzaldehyde." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (May 25, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/benzaldehyde

"benzaldehyde." The Columbia Encyclopedia, 6th ed.. . Retrieved May 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/benzaldehyde

emulsin

emulsin A mixture of enzymes (glycosidases) in bitter almond which hydrolyse the glucoside amygdalin to benzaldehyde, glucose, and cyanide.

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"emulsin." A Dictionary of Food and Nutrition. . Encyclopedia.com. 25 May. 2017 <http://www.encyclopedia.com>.

"emulsin." A Dictionary of Food and Nutrition. . Encyclopedia.com. (May 25, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/emulsin

"emulsin." A Dictionary of Food and Nutrition. . Retrieved May 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/emulsin

benzenecarbonal

benzenecarbonal, IUPAC name for benzaldehyde.

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"benzenecarbonal." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 25 May. 2017 <http://www.encyclopedia.com>.

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"benzenecarbonal." The Columbia Encyclopedia, 6th ed.. . Retrieved May 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/benzenecarbonal