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Encyclopedia > Diol

A diol is a chemical compound containing two hydroxyl groups (-OH groups). A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. ... Hydroxide is a functional group consisting of oxygen and hydrogen: -O−H It has a charge of 1-. The term hydroxyl group is used when the functional group -OH is counted as a substituent of an organic compound. ...

When the atom is a carbon atom in an organic compound, the diol section of the molecule is unstable and has a tendency to dehydrate forming a carbonyl group. For example, carbonic acid (HO-CO-OH) is unstable and has a tendency to convert to carbon dioxide (CO2) and water (H2O). Only when formaldehyde (H-CO-H) is dissolved in water is the chemical equilibrium in favor of the geminal diol version of the compound [H-C(OH)2-H]. In chemistry vicinal stands for any two functional groups bonded to two adjacent carbon atoms. ... A chemical bond is the physical phenomenon of chemical substances being held together by attraction of atoms to each other through sharing, as well as exchanging, of electrons or electrostatic forces. ... Properties In chemistry and physics, an atom (Greek άτομον meaning indivisible) is the smallest possible particle of a chemical element that retains its chemical properties. ... Ethylene glycol (monoethylene glycol (MEG), IUPAC name: ethane-1,2-diol) is an alcohol with two -OH groups (a diol), a chemical compound widely used as an automotive antifreeze. ... Propylene glycol, also known as 1,2-propanediol, is an organic compound (a diol alcohol), usually a tasteless, odorless, and colorless clear oily liquid that is hygroscopic and miscible with water, acetone, and chloroform. ... In chemistry, the term geminal refers to the relationship between two functional groups that are attached to the same atom. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Benzene An organic compound is any member of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, carbon oxides and elementary carbon. ... In chemistry, a molecule is an aggregate of at least two atoms in a definite arrangement held together by special forces. ... In chemistry, a carbonyl group is a functional group composed of an atom of carbon double-bonded to an atom of oxygen. ... Carbonic acid (ancient name acid of air or aerial acid) is the only inorganic carbon acid, and has the formula H2CO3. ... Carbon dioxide is an atmospheric gas comprised of one carbon and two oxygen atoms. ... The chemical compound formaldehyde (also known as methanal), is a gas with a strong pungent smell. ... Water (H2O, HOH) is the most abundant molecule on Earth, composing 70-75% of the Earths surface as liquid and solid state in addition to being found in the atmosphere as a vapor. ... Chemical equilibrium is the state in which a chemical reaction proceeds at the same rate as its reverse reaction; the rates of the forward and reverse reactions are equal, and the concentration of the reactants and products stop changing. ...


Other examples of diols are 1,4-Butanediol and Bisphenol A. (Redirected from 1,4 Butanediol) Chemical structure of 1,4-butanediol 1,4-Butanediol (C4H10O2, molecular weight 90. ... This article needs to be wikified. ...


Synthesis of diols

The most fundamental reactions in chemistry are the redox processes. ... An alkene in organic chemistry is an unsaturated hydrocarbon containing at least one carbon to carbon double bond. ... For alternative meanings see acid (disambiguation). ... Potassium permanganate (KMnO4) is an inorganic chemical compound composed of potassium (K+) and permanganate (MnO4−) ions. ... The chemical compound osmium tetroxide (OsO4), also known as osmium tetraoxide, osmium(VIII) oxide, or osmic acid, is an oxide of the element osmium. ... Sharpless bishydroxylation or asymmetric dihydroxylation (AD) is a chemical reaction of an alkene with osmium tetroxide to form a diol (dialcohol). ... The term chiral (pronounced ki-rall) is used to describe an object which is non-superimposable on its mirror image. ... When purchasing or preparing chemicals, reagent describes chemical substances of sufficient purity for use in chemical analysis, chemical reactions or physical testing. ... In chemistry, a catalyst (Greek: καταλύτης, catalytēs) is a substance that decreases the activation energy of a chemical reaction (see also catalysis) without itself being changed at the end of the chemical reaction. ... The Woodward cis-hydroxylation is the chemical reaction of alkenes with iodine and silver acetate in wet acetic acid to form cis-diols. ... The Prins reaction is an organic reaction consisting of an electrophilic addition of an aldehyde or ketone to an alkene or alkyne followed by capture of a nucleophile . The outcome of the reaction depends on reaction conditions (scheme 1). ... An alkene in organic chemistry is an unsaturated hydrocarbon containing at least one carbon to carbon double bond. ... The chemical compound formaldehyde (also known as methanal), is a gas with a strong pungent smell. ...

Reactions

In chemistry, an alcohol is any organic compound in which a hydroxyl group (-OH) is bound to a carbon atom of an alkyl or substituted alkyl group. ... Ether is the general name for a class of chemical compounds which contain an ether group — an oxygen atom connected to two (substituted) alkyl groups. ... Ethylene glycol (monoethylene glycol (MEG), IUPAC name: ethane-1,2-diol) is an alcohol with two -OH groups (a diol), a chemical compound widely used as an automotive antifreeze. ... In chemistry, a monomer (from Greek mono one and meros part) is a small molecule that may become chemically bonded to other monomers to form a polymer. ... Polymerization is a process of reacting monomer molecules together in a chemical reaction to form three-dimensional networks or polymer chains [1]. There are many forms of polymerization and different systems exist to categorize them. ... Polymer is a term used to describe a very long molecule consisting of structural units and repeating units connected by covalent chemical bonds. ... Please wikify (format) this article or section as suggested in the Guide to layout and the Manual of Style. ... A polyurethane is any polymer consisting of a chain of organic units joined by urethane links. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...

See also

  • Alcohols are chemical compounds with just one hydroxyl group
  • Polyols are chemical compounds with not two but multiple hydroxyl groups

  Results from FactBites:
 
Diol - Wikipedia, the free encyclopedia (323 words)
Examples of vicinal diol compounds are ethylene glycol and propylene glycol.
When the atom is a carbon atom in an organic compound, the diol section of the molecule is unstable and has a tendency to dehydrate forming a carbonyl group.
Diols such as ethylene glycol are used as co-monomers in some polymerization reactions forming polymers such as certain polyesters and polyurethanes.
Ester diol alkoxylate acrylates - Patent 4163113 (3477 words)
Novel ester diol alkoxylate acrylates prepared by the reaction of an ester diol and an alkylene oxide to produce an ester diol alkoxylate that is subsequently reacted with acrylic acid or methacrylic acid.
An ester diol alkoxylate acrylate as claimed in claim 1, wherein m has a value of 2 to 3; n has a value of 1 to 3; x and y have values of from 1 to 10; X is hydrogen and R is an alkyl group having from 1 to 3 carbon atoms.
The ester diol alkoxylate acrylates III are produced by the reaction of the ester diol alkoxylate IV with acrylic acid or methacrylic acid or mixtures thereof.
  More results at FactBites »

 
 

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