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Acetal

Definition of the noun acetal

What does acetal mean as a name of something?

noun - plural: acetals

  1. any organic compound formed by adding alcohol molecules to aldehyde molecules
    • lexical domain: Substances - nouns denoting substances
    • more generic term: organic compound = any compound of carbon and another element or a radical

Alternative definition of the noun acetal

noun

  1. [organic chemistry] Any diether of a geminal diol, R2C(OR')2 (where R' does not = H).

Explanation

Acetal: An acetal is a functional group with the following connectivity R₂C₂, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may be equivalent to each other or not. The two R groups can be equivalent to each other or not, and one or both can even be hydrogen atoms rather than organic fragments. Acetals are formed from and convertible to carbonyl compounds. The term ketal is sometimes used to identify structures associated with ketones rather than aldehydes, and historically, the term acetal was used specifically for the aldehyde cases. Cellulose is a ubiquitous example of an acetal.

  • also known as 缩醛

Printed dictionaries and other books with definitions for Acetal

Click on a title to look inside that book (if available):

Google previewThermoplastic Material Selection (2015)

A Practical Guide by Eric R. Larson

polyacetal, and polyformaldehyde, acetal is a fascinating material often overlooked by most design engineers. Acetal is a semicrystalline thermoplastic with an interesting mix of properties. First , it has ...

Google previewIndustrial Plastics (2004)

Theory and Applications by Terry L. Richardson, Erik Lokensgard

The term acetal refers to the oxygen atom that joins the repeating units of the polymer structure. Polyoxymethylene (POM) is the correct chemical term for this polymer. Acetal is a generic term. A number of initiators or catalysts are used to ...

Google previewMCAT Organic Chemistry Review, 3rd Edition (2016)

by Princeton Review

enzyme breaks the bond, because the acetal is a stable functional group. In other words, once a monosaccharide has attacked another sugar to form a glycosidic linkage, it is no longer free to mutarotate. This is an important concept, and we ...

Google previewOrganic Chemistry (2016)

by CTI Reviews

An acetal is a functional group with the following connectivity R2C2, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may ...

Google previewThe Princeton Review MCAT Complete (2014)

For MCAT 2015 by Princeton Review

The significance of this is that the glycosidic linkage stays in the co or 3 configuration until an enzyme breaks the bond, because the acetal is a stable functional group. In other words, once a monosaccharide has attacked another sugar to form ...

Google previewChemical Pharmacology (1921)

H6 H Acetal Acetal is an uncertain hypnotic and produces unpleasant heart depression, and patients soon become habituated to it. By analogy one would think that water HOH would react with acetaldehyde to form an addition product, e.g. ...

Google previewCommercial Organic Analysis (1898)

A Treatise on the Properties, Proximate Analytical Examination, and Modes of Assaying the Various Organic Chemicals and Products Employed in the Arts, Manufactures, Medicine, with Concise Methods for the Detection and Determination of Their Impurities, Adulterations, and Products of Decomposition by Alfred Henry Allen

Acetal is a body having the constitution of a diethyl-aldehydate. It has an agreeable odor, and is produced by the prolonged contact of aldehyde with alcohol, and hence has been recognised as a constituent of old wine and matured spirits.

Google previewFundamentals of General, Organic, and Biological Chemistry (2016)

by CTI Reviews

An acetal is a functional group with the following connectivity R2C2, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may ...

Google previewMedicinal Chemistry for the Use of Students and the Profession (1848)

Being a Manual of the Science, with Its Applications to Toxicology, Physiology, Therapeutics, Hygiene, Etc by Daniel Pereira Gardner

Acetal is a colorless aromatic liquid containing the elements of ether and aldehyde (C.H.O.); it is procured by a troublesome process from the result of the action of moist platinum black on ...

Google previewHazardous Chemicals (2013)

Safety Management and Global Regulations by T.S.S. Dikshith

Molecular formula: C6H14O2 Synonyms and trade names: 1,1- Diethoxyethane; Diethylacetal; Ethylidene diethyl ether Acetal is a clear, colourless, and extremely flammable liquid with an agreeable odour. The vapour is susceptible ...

Google previewOrganic Mechanisms (2010)

Reactions, Stereochemistry and Synthesis by Reinhard Bruckner

The difference between the hydrolysis of an orthoester and the hydrolysis of an acetal is that protonation and C-0 bond cleavage occur together in the former.

Google previewChemistry (2016)

by CTI Reviews

Acetal: An acetal is a molecule with two single bonded oxygens attached to the same carbon atom. Traditional usages distinguish ...

Google previewTextbook of Biochemistry (2016)

by CTI Reviews

An acetal is a functional group with the following connectivity R2C2, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may ...

Google previewBiochemistry (2016)

by CTI Reviews

An acetal is a functional group with the following connectivity R2C2, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may ...

Google previewBiochemistry, Update (2016)

by CTI Reviews

An acetal is a functional group with the following connectivity R2C2, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may ...

Google previewOrganic and Biological Chemistry (2015)

by H. Stephen Stoker

A OR3 OH OH O O C H A R1O 1 O A C AOR2R1 31 OR2 H1 O OHOR H H A hemiacetal An alcohol An acetal An acetal is an organic compound in which a carbon atom is bonded to two alkoxy groups (!OR). OR COR The relationship between ...

Google previewMcat (2010)

Organic Chemistry Review

because the acetal is a stable Functional group. In other words, once a monosaccharide has attacked another sugar to form a glycosidic linkage, it is no longer free to mutarotate. This is an important concept. and we will discuss it ...

Google previewFundamentals of Polymer Engineering (1997)

by Arie Ram

Acetal, (Polyacetal) Poly-oxymethylene (POM) Acetal is a polymer obtained through an addition reaction of formaldehyde — (CH2— O)n. It excels in mechanical performance and is regarded as a prominent engineering polymer. It appeared in ...

Google previewThe Analyst (1891)

Acetal is a body having the constitution of a diethyl-aldehydate. It has an agreeable odour, and is produced by the prolonged contact of aldehyde with alcohol, and hence has been recognised as a constituent of old wine and matured spirits.

Google previewDictionary of Flavors (2017)

by Dolf De Rovira, Sr.

258–95–7 propyleneglycol acetal o 6– Methyl-5-hepten-2-one propylene glycol ketal nonanal dimethyl ...

Google previewEncyclopedia of Food and Color Additives (1997)

by George A. Burdock

PHENYLACETALDEHYDE DIISOBUTYL ACETAL Synonyms Current CAS number Description Empirical formula Specifications Benzene, (2...

68345-22-2 Phenylacetaldehyde diisobutyl acetal has a sweet, floral, delicate green odor. May be ...

Google previewEncyclopedia and Handbook of Materials, Parts and Finishes, Third Edition (2016)

by Mel Schwartz

Properties of low moisture absorption, excellent creep resistance, and height deflection temperature suit acetal...

Google previewEncyclopedia of Physical Organic Chemistry, 6 Volume Set (2017)

by Zerong Wang, Uta Wille, Eusebio Juaristi

The acetal moiety is highly resistant to basic conditions and distinctly prone to degradation in the presence of an acid, thus the protection of hydroxyl groups as acetals is very useful. Isopropylidenes (often called acetonides) and benzylidenes ...

Google previewLotus Illustrated Dictionary of Organic Chemistry (2004)

by Terry Hills

gvalerolactpne | vinyl acetal resin NOTES...

Google previewWhittington's Dictionary of Plastics, Third Edition (1993)

by James F. Carley

Acetal Resin ABS Resin Any of a family of thermoplastics based on acrylonitrile, butadiene and styrene combined by a variety of methods involving polymerization, graft copolymerization, physical mixtures, and combinations thereof. Hundreds ...

Google previewEncyclopedic Dictionary of Industrial Technology (2012)

Materials, Processes and Equipment by David F. Tver

acetal (plastics). Acetal is an engineering-type thermoplastic and is referred to as a linear polymer of ...

Google previewEncyclopedia of Materials, Parts and Finishes, Second Edition (2002)

by Mel Schwartz

ACETAL HOMOPOLYMERS The homopolymers are available in several viscosity ranges that meet a variety of processing and end-use needs. The higher -viscosity materials are generally used for extrusions and for molded parts requiring ...

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Small photo of Dental prosthesis made of acetal for the upper jaw in 2 projections closeup on white background. It's a convenient material in dental prosthetics. This design is attached with alveolar-dental clasps. More...

Video about Acetal

Acetal Meaning

Video shows what acetal means. Any diether of a geminal diol, R2C(OR')2 (where R' does not = H).. acetal pronunciation. How to pronounce, definition by ...

Scrabble value of A1C3E1T1A1L1

The value of this 6-letter word is 8 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

Anagrams of ACETAL

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