Benzene
Benzene
1
Benzene
Benzene
Identifiers
[1]
CAS number
71-43-2
PubChem
241
ChemSpider
236
UNII
J64922108F
EC number
200-753-7
KEGG
C01407
ChEBI
CHEBI:16716
ChEMBL
CHEMBL277500
RTECS number
CY1400000
Jmol-3D images
Image 1
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
Properties
Molecular formula
CH
Molar mass
78.11 g mol−1
Appearance
Colorless liquid
Odor
aromatic, gasoline-like
6 6
Benzene
2
Density
0.8765(20) g/cm3
Melting point
5.5 °C, 278.7 K, 41.9 °F
Boiling point
80.1 °C, 353.3 K, 176.18 °F
Solubility in water
1.79 g/L (15 °C)
Solubility
soluble in alcohol, chloroform, CCl4, diethyl ether, acetone
log P
2.13
Vapor pressure
10 kPa
λmax
255 nm
Magnetic susceptibility
54.8 x 10−6 cm3/mol
Refractive index (nD)
1.50108
Viscosity
0.652 cP at 20 °C
Dipole moment
0D
Thermochemistry
Std enthalpy of o formation ΔfH 298
48.7 kJ/mol
Standard molar o entropy S 298
173.26 J/K mol
Specific heat capacity, C
136.0 J/K mol
Hazards
MSDS
External MSDS
EU classification
•
•
•
•
R-phrases
R45, R46, R11, R16, R36/38,R48/23/24/25, R65
S-phrases
S53, S45
Flammable (F)
Carc. Cat. 1
Muta. Cat. 2
Toxic (T)
NFPA 704
Flash point
−11.63 °C; 11.07 °F; 261.52 K
Autoignition temperature
497.78 °C; 928.00 °F; 770.93 K
Explosive limits
1.2–7.8%
LD
930 mg/kg (rat, oral)
50
Related compounds
Related compounds
•
•
toluene borazine Supplementary data page
Structure and properties n, ε , etc. r Benzene
3
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data
UV, IR, NMR, MS (verify)
[10]
(what is: / ?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C or 77 °F, 100 kPa)
Infobox references
Benzene is
1
Benzene
Benzene
Identifiers
[1]
CAS number
71-43-2
PubChem
241
ChemSpider
236
UNII
J64922108F
EC number
200-753-7
KEGG
C01407
ChEBI
CHEBI:16716
ChEMBL
CHEMBL277500
RTECS number
CY1400000
Jmol-3D images
Image 1
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
Properties
Molecular formula
CH
Molar mass
78.11 g mol−1
Appearance
Colorless liquid
Odor
aromatic, gasoline-like
6 6
Benzene
2
Density
0.8765(20) g/cm3
Melting point
5.5 °C, 278.7 K, 41.9 °F
Boiling point
80.1 °C, 353.3 K, 176.18 °F
Solubility in water
1.79 g/L (15 °C)
Solubility
soluble in alcohol, chloroform, CCl4, diethyl ether, acetone
log P
2.13
Vapor pressure
10 kPa
λmax
255 nm
Magnetic susceptibility
54.8 x 10−6 cm3/mol
Refractive index (nD)
1.50108
Viscosity
0.652 cP at 20 °C
Dipole moment
0D
Thermochemistry
Std enthalpy of o formation ΔfH 298
48.7 kJ/mol
Standard molar o entropy S 298
173.26 J/K mol
Specific heat capacity, C
136.0 J/K mol
Hazards
MSDS
External MSDS
EU classification
•
•
•
•
R-phrases
R45, R46, R11, R16, R36/38,R48/23/24/25, R65
S-phrases
S53, S45
Flammable (F)
Carc. Cat. 1
Muta. Cat. 2
Toxic (T)
NFPA 704
Flash point
−11.63 °C; 11.07 °F; 261.52 K
Autoignition temperature
497.78 °C; 928.00 °F; 770.93 K
Explosive limits
1.2–7.8%
LD
930 mg/kg (rat, oral)
50
Related compounds
Related compounds
•
•
toluene borazine Supplementary data page
Structure and properties n, ε , etc. r Benzene
3
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data
UV, IR, NMR, MS (verify)
[10]
(what is: / ?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C or 77 °F, 100 kPa)
Infobox references
Benzene is
References: [16] Mansfield, Charles Blachford (1849) "Untersuchung des Steinkohlentheers" (http:/ / books. google. com/ books?id=kD4aAQAAMAAJ& pg=PA162) (Investigation of coal tar), Annalen der Chemie und Pharmacie, vol [17] Charles Mansfield filed for (November 11, 1847) and received (May 1848) a patent (no. 11,960) for the fractional distillation of coal tar. [19] J. Loschmidt, Chemische Studien (Vienna, Austria-Hungary: Carl Gerold 's Sohn, 1861), pp. 30, 65 (http:/ / books. google. com/ books?id=ksw5AAAAcAAJ& pg=PA30). [21] Rocke, A. J. (2010) Image and Reality: Kekule, Kopp, and the Scientific Imagination, University of Chicago Press, pp. 186–227, ISBN 0226723356. [23] Claus, Adolph K.L. (1867) Theoretische Betrachtungen und deren Anwendungen zur Systematik der organischen Chemie (Theoretical considerations and their applications to the classification scheme of organic chemistry), Freiburg, Germany, p [24] Dewar, James (1867) "On the oxidation of phenyl alcohol, and a mechanical arrangement adapted to illustrate structure in the non-saturated hydrocarbons," (http:/ / books [25] Ladenburg, Albert (1869) "Bemerkungen zur aromatischen Theorie" (http:/ / books. google. com/ books?id=Epg8AAAAIAAJ& pg=PA140) (Observations on the aromatic theory), Berichte der Deutschen Chemischen Gesellschaft 2: 140–142. [26] Armstrong, Henry E. (1887) "An explanation of the laws which govern substitution in the case of benzenoid compounds," (http:/ / books. [27] Thiele, Johannes (1899) "Zur Kenntnis der ungesättigten Verbindungen" (On our knowledge of unsaturated compounds), Justus Liebig’s Annalen der Chemie,306: 87–266; see: "VIII 125–129. (http:/ / books. google. je/ books?id=NYw8AAAAIAAJ& pg=RA1-PA125) See further: Thiele (1901) "Zur Kenntnis der ungesättigen Verbindungen," Justus Liebig’s Annalen der Chemie, 319: 129–143. [30] Gillis, Jean "Auguste Kekulé et son oeuvre, realisee a Gand de 1858 a 1867," Memoires de l 'Academie Royale de Belgique, 37:1 (1866), 1–40. environmentalhealthnews. org/ ehs/ newscience/ benzene-linked-to-neural-tube-birth-defects/ ). Environmentalhealthnews.org (2010-10-26). environmentalhealthnews. org/ ehs/ newscience/ benzene-linked-to-sperm-abnormalities). Environmentalhealthnews.org (2010-02-16). osha. gov/ pls/ oshaweb/ owadisp. show_document?p_table=INTERPRETATIONS& p_id=24730). Osha.gov (2003-10-16). Retrieved on 2010-10-09.