benzaldehyde

Home > ... > Science and Technology > Chemistry > Organic Chemistry > ...

Essential reading Compare
side-by-side The Columbia Encyclopedia, ... A Dictionary of Food and Nutrition The Columbia Encyclopedia, ...

benzaldehyde

benzaldehyde or benzenecarbonal , C ₆ H ₅ CHO, 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.

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1E1-benzalde" title="Facts and information about benzaldehyde">benzaldehyde</a>

Give this article a thumbs-up on StumbleUpon

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"benzaldehyde." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 13 Nov. 2009 <http://www.encyclopedia.com>.

"benzaldehyde." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (November 13, 2009). http://www.encyclopedia.com/doc/1E1-benzalde.html

"benzaldehyde." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved November 13, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-benzalde.html

Learn more about citation styles

emulsin

A Dictionary of Food and Nutrition | 2005 | | Â© A Dictionary of Food and Nutrition 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

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

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1O39-emulsin" title="Facts and information about benzaldehyde">benzaldehyde</a>

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

DAVID A. BENDER. "emulsin." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 13 Nov. 2009 <http://www.encyclopedia.com>.

DAVID A. BENDER. "emulsin." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (November 13, 2009). http://www.encyclopedia.com/doc/1O39-emulsin.html

DAVID A. BENDER. "emulsin." A Dictionary of Food and Nutrition. 2005. Retrieved November 13, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-emulsin.html

Learn more about citation styles

benzenecarbonal

benzenecarbonal IUPAC name for benzaldehyde .

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1E1-X-benzencar" title="Facts and information about benzaldehyde">benzaldehyde</a>

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"benzenecarbonal." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 13 Nov. 2009 <http://www.encyclopedia.com>.

"benzenecarbonal." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (November 13, 2009). http://www.encyclopedia.com/doc/1E1-X-benzencar.html

"benzenecarbonal." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved November 13, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-benzencar.html

Learn more about citation styles

Free newspaper and magazine articles

	New natural benzaldehyde source discovered in Yunnan. (Newsdesk).(Brief Article) Magazine article from: China Chemical Reporter; 5/26/2002
	A modified spectrophotometric procedure for the determination of pyruvic acid in onions using benzaldehyde derivatives. Magazine article from: International Journal of Applied Chemistry; 5/1/2007
	Rionlon. Magazine article from: China Chemical Reporter; 9/26/2002

Facts and information from other sites

Related articles from newspapers, magazines, and more

	Influence of Thermal Processing Conditions on Flavor Stability in Fluid Milk: Benzaldehyde Magazine article from: Journal of Dairy Science; 1/1/2005; ; 700+ words ; ...conditions (or xanthine oxidase inactivation) on benzaldehyde stability. Benzaldehyde was added to whole milk which had been thermally...Additionally, PAH and UHT milk samples containing benzaldehyde (with and without ferrous sulfate) were spiked...
	BENZALDEHYDE.(Brief Article) Magazine article from: Chemical Market Reporter; 5/29/2000; 639 words ; ...well-balanced supply and demand, benzaldehyde may be on the upswing. In Europe...increase of 10c. per kilogram for benzaldehyde. The company cites the increased cost...of the high cost of oil. Demand for benzaldehyde--a versatile building block derived...
	Evaluation of benzaldehyde and benzophenone derivatives as accelerators in NR. Magazine article from: Rubber World; 8/1/1989; ; 700+ words ; Evaluation of benzaldehyde and benzophenone derivatives as...derivative with phenyl hydrazine; benzaldehyde and its p-methoxy derivatives...from methanol. The products were benzaldehyde phenyl hydrazone (BaPH), m...
	New natural benzaldehyde source discovered in Yunnan. (Newsdesk).(Brief Article) Magazine article from: China Chemical Reporter; 5/26/2002; 600 words ; ...discovered that the main ingredient is benzaldehyde, and no toxic substances - such as...are contained in the leaves. Natural benzaldehyde has a more pleasant fragrance than...materials for production of natural benzaldehyde. It can fully replace essences of...
	A modified spectrophotometric procedure for the determination of pyruvic acid in onions using benzaldehyde derivatives. Magazine article from: International Journal of Applied Chemistry; 5/1/2007; ; 700+ words ; ...reaction of pyruvic acid with some benzaldehyde derivatives in an alkaline medium to...experimental conditions. For the selected benzaldehyde derivative (p-dimethylaminobenzaldehyde...favourably. Keywords: Pyruvic acid; benzaldehyde derivatives; spectrophotometry; onion...
	Simultaneous determination of cobalt(II) and nickel(II) by fourth-order derivative spectrophotometric method using 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone.(Research Article) Magazine article from: Journal of Automated Methods and Management in Chemistry; 1/1/2007; ; 700+ words ; ...separation using 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone (HMBATSC) as a...present paper, 2-hydroxy3-methoxy benzaldehyde thiosemicarbazone (HMBATSC) is used...present paper, 2-hydroxy-3-methoxy benzaldehyde thiosemicarbazone (HMBATSC) reacts...
	Isolation of liver aldehyde oxidase containing fractions from different animals and determination of kinetic parameters for benzaldehyde.(Short Communication)(Report) Magazine article from: Indian Journal of Pharmaceutical Sciences; 1/1/2008; ; 700+ words ; ...were determined for the oxidation of benzaldehyde to benzoic acid by rabbit and guinea...kinetic parameters of AO for substrate benzaldehyde by spectrophotometric method. Animal...dipotassium hydrogen orthophosphate, benzaldehyde and EDTA were purchased from S. D...
	Indian Inventors Develop Toluene To Benzaldehyde Oxidation Process News Wire article from: US Fed News Service, Including US State News; 8/19/2008; 465 words ; ...have developed a process for the oxidation of toluene to benzaldehyde. According to the U.S. Patent & Trademark Office...acetic acid), as a solvent, to obtain high selectivity to benzaldehyde (76%). High activity was obtained with minimum byproducts...
	Peachy Pesticide?(a synthetic peach oil called benzaldehyde may replace the environmentally hazardous methyl bromide as a pesticide)(Brief Article) Magazine article from: Consumers' Research Magazine; 4/1/1999; ; 700+ words ; ...begun field tests on the synthetic substance--known as benzaldehyde--and are also interested in whether clove and wintergreen...the deadline until 2005 in response to growers' concerns. Benzaldehyde already is used in flavorings, perfumes, and drugs, as...
	EPA Rule on Benzaldehyde, Captafol, Hexaconazole Sent to Senate News Wire article from: US Fed News Service, Including US State News; 5/9/2006; 317 words ; ...at EPA's Office of Policy, Economics and Innovation has transmitted, pursuant to law, the report of a rule entitled "Benzaldehyde, Captafol, Hexaconazole, Paraformaldehyde, Sodium dimethyldithiocarbamate, and Tetradifon; Tolerance Actions." The...