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Encyclopedia > Benzoin
Benzoin
Identifiers
CAS number [119-53-9]
SMILES O=C(c2ccccc2)C(O)c1ccccc1
Properties
Molecular formula C14H12O2
Molar mass 212.25 g/mol
Density 1.31 g/cm3
Melting point

137 °C Image File history File links Benzoin. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ... This article or section does not cite any references or sources. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... In physics, density is mass m per unit volume V. For the common case of a homogeneous substance, it is expressed as: where, in SI units: ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg V is... The melting point of a crystalline solid is the temperature at which it changes state from solid to liquid. ...

Boiling point

344 °C The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ...

Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references
"Benzoin" is also used to describe benzoin resin, which does not contain the benzoin described on this page.

Benzoin or 2-Hydroxy-2-phenylacetophenone or 2-Hydroxy-1,2-Diphenylethanone or desyl alcohol or bitter almond oil camphor is an organic compound consisting of an ethylene bridge flanked by phenyl groups and with a hydroxyl and a ketone functional group. It comes as off-white crystals, with a light camphor odor. Benzoin is synthesized from benzaldehyde in the benzoin condensation. In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... Benzoin resin or styrax resin is a balsamic resin obtained from the bark of several species of trees in the genus Styrax. ... Benzene is the simplest of the arenes, a family of organic compounds An organic compound is any member of a large class of chemical compounds whose molecules contain carbon and hydrogen; therefore, carbides, carbonates, carbon oxides and elementary carbon are not organic (see below for more on the definition controversy... In chemistry, the phenyl group or phenyl ring (often abbreviated as -Ph) is the functional group with the formula -C6H5 Picture where the six carbon atoms are arranged in a cyclic manner. ... // Hydroxyl group The term hydroxyl group is used to describe the functional group -OH when it is a substituent in an organic compound. ... Ketone group A ketone(key tone) is either the functional group characterized by a carbonyl group (O=C) linked to two other carbon atoms or a chemical compound that contains this functional group. ... In organic chemistry, functional groups are specific groups of atoms within molecules, that are responsible for the characteristic chemical reactions of those molecules. ... R-phrases 11-20/21/22-36/37/38 S-phrases 16-26-36 RTECS number EX1260000 (R) EX1250000 (S) Supplementary data page Structure and properties n, εr, etc. ... Benzaldehyde (C6H5CHO) is a chemical compound consisting of a benzene ring with an aldehyde substituent. ... The Benzoin condensation is a condensation reaction between two aromatic aldehydes, especially benzaldehyde that is catalyzed by a cyanide. ...


Its main uses are:

Benzoin is not a constituent of benzoin resin obtained from the benzoin tree (Styrax) or tincture of benzoin. The main component in these natural products is benzoic acid. In chemistry, photocatalysis is the acceleration of a photoreaction in the presence of a catalyst. ... Category: ... Organic reductions or organic oxidations or organic redox reactions are redox reactions that take place with organic compounds. ... The chemical compound nitric acid (HNO3), also known as aqua fortis and spirit of nitre, is an aqueous solution of hydrogen nitrate (anhydrous nitric acid). ... Peroxymonosulfuric acid, also known as persulfuric acid and as Caros acid, is H2SO5, a colorless solid melting at 45 °C. In this acid, the S(VI) center adopts its characteristic tetrahedral geometry; the connectivity is indicated by the formula HO-O-S(O)2-OH. H2SO5 is sometimes confused... Aluminium oxide (or aluminum oxide) (Al2O3) is a chemical compound of aluminium and oxygen. ... Dichloromethane or Methylene chloride is a chemical compound widely used as a solvent for organic materials. ... Benzoin resin or styrax resin is a balsamic resin obtained from the bark of several species of trees in the genus Styrax. ... Various species of the genus Styrax native to Sumatra, Java, and Thailand. ... Tincture of benzoin is a solution of benzoin resin in alcohol. ... Benzoic acid, C7H6O2 (or C6H5COOH), is a colorless crystalline solid and the simplest aromatic carboxylic acid. ...


References

  1. ^ Konstantinos Skobridis, Vassiliki Theodorou, Edwin Weber (2006). "A very simple and chemoselective air oxidation of benzoins to benzils using alumina". Arkivoc 06-1798JP: 102-106. 

  Results from FactBites:
 
Benzoin - LoveToKnow 1911 (247 words)
BENZOIN, or Gum Benjamin (supposed to be from Arab.
There are several varieties of benzoin in commerce: (I) Siam benzoin, which apparently does not come from Styrax benzoin, is the finest and most aromatic, and occurs in the form of small "tears," rarely exceeding 2 in.
The odour of Siam benzoin is partly due to the presence of vanillin, and the substance contains as much as 38% of benzoic acid but no cinnamic acid.
Chapter 2. Description of gum benzoin (825 words)
Most Siam benzoin exported from Lao PDR is in the form in which it is collected from the tree, after it has been cleaned and graded.
The chemical compositions of the two types of benzoin account for their sensory characteristics and determine the uses to which they are put.
However, in Siam benzoin the chief constituents are benzoic acid and its esters (such as coniferyl benzoate, benzyl benzoate and cinnamyl benzoate), while in Sumatra benzoin the major constituents are cinnamic acid and its esters (such as coniferyl cinnamate and cinnamyl cinnamate).
  More results at FactBites »


 
 

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