{{chembox
| Watchedfields = changed
| verifiedrevid = 464365162
| Name = Benzene
| ImageFileL1_Ref = {{chemboximage|correct|??}}
| ImageFileL1 = Benzene geometrie.svg
| ImageNameL1 = Skeletal formula detail o benzene
| ImageSizeL1 = 120px
| ImageFileR1 = Benzene-xtal-3D-vdW.png
| ImageNameR1 = Stack o benzene baw-an-stick model
| ImageSizeR1 = 150px
| ImageFile2 = Solid benzene.png
| ImageName2 = Frozen benzene
| ImageSize2 = 200px
| IUPACName = Benzene
| SystematicName = Cyclohexa-1,3,5-triene
| OtherNames = 1,3,5-Cyclohexatriene, Benzol, Phene
| Section1 = {{Chembox Identifiers
  | CASNo = 71-43-2
  | CASNo_Ref = {{cascite|correct|CAS}}
  | PubChem = 241
  | ChemSpiderID = 236
  | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
  | UNII = J64922108F
  | UNII_Ref = {{fdacite|correct|FDA}}
  | KEGG = C01407
  | KEGG_Ref = {{keggcite|correct|kegg}}
  | ChEBI = 16716
  | ChEBI_Ref = {{ebicite|correct|EBI}}
  | ChEMBL = 277500
  | ChEMBL_Ref = {{ebicite|correct|EBI}}
  | RTECS = CY1400000
  | SMILES = c1ccccc1
  | EINECS = 200-753-7
  | InChI = 1/C6H6/c1-2-4-6-5-3-1/h1-6H
  | InChIKey = UHOVQNZJYSORNB-UHFFFAOYAH
  | StdInChI = 1S/C6H6/c1-2-4-6-5-3-1/h1-6H
  | StdInChI_Ref = {{stdinchicite|correct|chemspider}}
  | StdInChIKey = UHOVQNZJYSORNB-UHFFFAOYSA-N
  | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
  }}
| Section2 = {{Chembox Properties
  | C=6|H=6
  | Appearance = Colourless liquid
  | Odor = Aromatic, petrol-like
  | Density = 0.8765(20) g/cm<sup>3</sup><ref name="handbook13">{{RubberBible86th}}</ref>
  | Solubility = 1.53 g/L (0 °C)<br> 1.81 g/L (9 °C)<br> 1.79 g/L (15 °C)<ref>{{cite journal |last1=Arnold |first1=D. |last2=Plank |first2=C. |last3=Erickson |first3=E. |last4=Pike |first4=F. |title=Solubility of Benzene in Water |year=1958 |journal=Industrial & Engineering Chemistry Chemical & Engineering Data Series |volume=3 |issue=2 |page=253 |doi=10.1021/i460004a016}}</ref><!--1st ref is most comprehensive but is paywalled---><ref>{{cite journal |last1=Breslow |first1=R. |last2=Guo |first2=T. |title=Surface tension measurements show that chaotropic salting-in denaturants are not just water-structure breakers |year=1990 |journal=Proceedings of the National Academy of Sciences of the United States of America |volume=87 |issue=1 |pages=167–9 |pmid=2153285 |pmc=53221 |doi=10.1073/pnas.87.1.167|bibcode = 1990PNAS...87..167B }}</ref><ref>{{cite book |last1=Coker |first1=A. Kayode |last2=Ludwig |first2=Ernest E. |title=Ludwig's Applied Process Design for Chemical And Petrochemical Plants |url=http://books.google.com/books?id=N8RcH8juG_YC&pg=PA114 |accessdate=2012-05-31 |volume=1 |year=2007 |publisher=Elsevier |isbn=0-7506-7766-X |page=114}}</ref><br> 1.84 g/L (30 °C)<br> 2.26 g/L (61 °C)<br> 3.94 g/L (100 °C)<br> 21.7 g/kg (200 °C, 6.5 MPa)<br> 17.8 g/kg (200 °C, 40 MPa)<ref name=chemister>http://chemister.ru/Database/properties-en.php?dbid=1&id=644</ref>
  | SolubleOther = Soluble in [[alcohol]], [[chloroform|CHCl<sub>3</sub>]], [[carbon tetrachloride|CCl<sub>4</sub>]], [[diethyl ether]], [[acetone]], [[acetic acid]]<ref name=chemister />
| Solubility1 = 5.83 g/100 g (20 °C)<br> 6.61 g/100 g (40 °C)<br> 7.61 g/100 g (60 °C)<ref name=chemister />
| Solvent1 = ethanediol
| Solubility2 = 20 °C, solution in water:<br> 1.2 mL/L (20% v/v)<ref name=sioc>{{cite book|last = Seidell|first = Atherton|last2 = Linke|first2 = William F.|year = 1952|title = Solubilities of Inorganic and Organic Compounds|publisher = Van Nostrand|url = [http://books.google.com/books?id=k2e5AAAAIAAJ Google Books]|accessdate = 2014-05-29}}</ref>
| Solvent2 = ethanol
| Solubility3 = 20 °C, solution in water:<br> 7.69 mL/L (38.46% v/v)<br> 49.4 mL/L (62.5% v/v)<ref name=sioc />
| Solvent3 = acetone
| Solubility4 = 52 g/100 g (20 °C)<ref name=chemister />
| Solvent4 = diethylene glycol
  | MeltingPtC = 5.53
  | BoilingPtC = 80.1
  | Viscosity = 0.7528 [[Poise|cP]] (10 °C)<br> 0.6076 cP (25 °C)<br> 0.4965 cP (40 °C)<br> 0.3075 cP (80 °C)
  | LambdaMax = 255 nm
  | RefractIndex = 1.5011 (20 °C)<br> 1.4948 (30 °C)<ref name=chemister />
  | LogP = 2.13
  | MagSus = 54.8·10<sup>−6</sup> cm<sup>3</sup>/mol
| VaporPressure = 12.7 kPa (25 °C)<br> 24.4 kPa (40 °C)<br> 181 kPa (100 °C)<ref name=nist>{{nist|name=Benzene|id=C71432|accessdate=2014-05-29|mask=FFFF|units=SI}}</ref>
  }}
| Section3 = {{Chembox Structure
| MolShape = Tetrahedral
| Dipole = 0 [[Debye|D]]
 }}
| Section4 = {{Chembox Thermochemistry
  | DeltaHf = 48.7 kJ/mol
  | HeatCapacity = 134.8 J/mol·K
  | Entropy = 173.26 J/mol·K<ref name=nist />
| DeltaHc = 3267.6 kJ/mol<ref name=nist />
 }}
| Section7 = {{Chembox Hazards
  | ExternalMSDS = [http://www.hmdb.ca/system/metabolites/msds/000/001/365/original/HMDB01505.pdf?1358893540 HMDB]
|   GHSPictograms = {{GHS02}}{{GHS06}}{{GHS08}}<ref name="sigma">[[Sigma-Aldrich|Sigma-Aldrich Co.]], [http://www.sigmaaldrich.com/catalog/product/sial/401765 Benzene]. Retrieved on 2014-05-29.</ref>
| GHSSignalWord = Danger
|   HPhrases = {{H-phrases|225|304|315|319|340|350|372}}<ref name="sigma" />
|   PPhrases = {{P-phrases|201|210|301+310|305+351+338|308+313|331}}<ref name="sigma" />
  | FlashPtC = −11.63
  | AutoignitionPtC = 497.78
  | ExploLimits = 1.2–7.8%
  | EUClass = {{Hazchem F}} {{Hazchem T+}}<br> [[Carcinogen|Carc. Cat. 1]]<br> [[Mutagen|Muta. Cat. 2]]
  | NFPA-H = 3
  | NFPA-F = 3
  | NFPA-R = 0
  | RPhrases = {{R45}}, {{R46}}, {{R11}}, {{R16}}, {{R36/38}},{{R48/23/24/25}}, {{R65}}
  | SPhrases = {{S53}}, {{S45}}
  | LD50 = 930 mg/kg (rat, oral)
  }}
| Section8 = {{Chembox Related
  | OtherCpds = [[Toluene]]<br> [[Borazine]]
  }}
}}
'''Benzene''' is an [[organic compoond|organic]] [[chemical compoond]] wi the molecular formula [[Carbon|C]]<sub>6</sub>[[Hydrogen|H]]<sub>6</sub>. The benzene molecule is componed o sax caurbon atoms jynt in a ring wi ane hydrogen atom attached tae ilk. As it conteens anerly caurbon an hydrogen atoms, benzene is clessed as a [[hydrocaurbon]].