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Definition of the noun Allene
What does Allene mean as a name of something?
- [organic chemistry] Any of a class of hydrocarbons having two double bonds from one carbon atom to two others - R2C=C=CR2; especially the parent compound CH2=C=CH2 (propadiene).
- [organic chemistry] Any derivative of such hydrocarbons.
"Allene" is a musical album of André Manuel.
- released on (8 years ago)
Allene: An allene is a compound in which one carbon atom has double bonds with each of its two adjacent carbon centres. Allenes are classified as polyenes with cumulated dienes. The parent compound of allene is propadiene. Compounds with an allene-type structure but with more than three carbon atoms are called cumulenes. Allenes are much more reactive than most other alkenes. For example, their reactivity with gaseous chlorine is more like the reactivity of alkynes than that of alkenes.
- also known as 累积二烯烃
Printed dictionaries and other books with definitions for Allene
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by T.S.S. Dikshith
Toxicity and health effects Allene is a simple asphyxiant with slight narcotic properties. Exposures to allene cause irritation to the skin and eyes, nausea, vomiting, headache, symptoms of drunkenness, suffocation, convulsions, and coma.
Cod-liver Oil and Chemistry (1895)
by Frantz Peckel Møller, Peter Møller Heyerdahl
1 t 9 9 T t T O METHYL o Butylene, CtH8 Mothyl-allene, C4Ha ; b.p. 18° Methyl- allene is a normal di-ethylene. If we remove from the same compound two atoms of.
Electron Spin Resonance (2007)
Allene is an interesting alkene as metal atoms can add to either the central carbon (to give ČH2CX=CH2) or to the terminal carbon (to give CH2=&CH2X). The hyperfine parameters of these radicals, formed in rotating cryostat experiments at ...
Calculation Methods for Environmental Professionals by Jack E. Daugherty
Allene is an unstable organic gas having two double carbon bonds, C=C=C. Another unstable double carbon bond is the diene structure such as 1 ,3- butadiene, C=C-C=C, 1,2-butadiene, C-C-C=C, and 1 ,4-butadiene, C-C=C-C. Unsaturated ...
Aromatic Organic Chemistry (2006)
by Amit Arora
Allene is a gas. b.p. - 32 C. With bromine it forms 184.108.40.206- tetrabromopropane: with sulphuric and it forms acetone and when treated with sodium in ether, the sodium derivative of propyne is produced. (a) CH, = C = CH, CH.C(OH,) = CH CH ...
by CTI Reviews
An allene is a hydrocarbon in which one atom of carbon is connected by double bonds with two other atoms of carbon.
Railroad Gazette (1893)
Allene is a new town less than 10 miles north of Wilton, Ark., which has been the northern terminus since January last. Texas & Gulf.—The grading was begun south of Marshall, Tex., a few weeks ago with a small force. The officers state that ...
by Arthur T. Hubbard
Heterogeneous decomposition of allene ...
by Joseph C. Salamone
ALLENE POLYMERIZATION initially acidic. The reduced molecular weight affects the film properties of the emulsion-based coating (most noticeably the film hardness), while the changes in acid number and pH may affect stability and ...
by Christopher H. Sterling, Cary O'Dell
org Koenig, AllenE., “Labor Relations intheBroadcasting Industry: Periodical ...
Themes, Works, and Wonders by Gary Westfahl
Allene Stuart Phy. Mary Shelley. Mercer Island, WA: Starmont House, 1988. Leonard Wolf, ed. The Annotated Frankenstein, by Mary Shelley. New York: Clarkson N. Potter, Inc. 1977. — Darrell Schweitzer From the Earth to the Moon by Jules ...
by John A. Simpson, E. S. C. Weiner
allene, n. Substitute for entry: allene ('aelizn), n.
by Steven H. Gale
293 Talmadge, Norma, 293 Talmey, Allene,
Online dictionaries and encyclopedias with entries for Allene
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Photos about Allene
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- Allene Jeanes
A one-time high school science teacher, ARS chemist Allene R. Jeanes was instrumental in developing a blood plasma extender that saved lives and a compound used to thicken household products ranging from steak sauces and cough syrups to skin lotions. (USDA-ARS Photo)
Photo credit: USDAgov
- Allene's concert - close up
Photo credit: jasoneppink
- Allene and Eve
Photo credit: SMHoenig
Video about Allene
Video shows what allene means. Any of a class of hydrocarbons having two double bonds from one carbon atom to two others - R2C=C=CR2, especially the ...
Scrabble value of A1L1L1E1N1E1
The value of this 6-letter word is 6 points, but it's not an accepted word in the Official Scrabble Players Dictionary.
Anagrams of ALLENE
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