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32212

Sigma-Aldrich

Benzene

puriss. p.a., reag. Ph. Eur., ≥99.7%

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Empirical Formula (Hill Notation):
C6H6
CAS Number:
71-43-2
Molecular Weight:
78.11
Beilstein:
969212
EC Number:
200-753-7
MDL number:
MFCD00003009
UNSPSC Code:
12352002
PubChem Substance ID:
329754103
NACRES:
NA.21

Agency

ISO
USP/NF
reag. Ph. Eur.

Quality Level

100

vapor density

2.77 (vs air)

vapor pressure

166 mmHg ( 37.7 °C)
74.6 mmHg ( 20 °C)

grade

puriss. p.a.

Assay

≥99.7%

form

liquid

autoignition temp.

1043 °F

expl. lim.

8 %

impurities

≤0.0002% free alkali (as NH3)
≤0.0004% free acid (as HCl)
≤0.001% non-volatile matter
≤0.03% water (Karl Fischer)
≤1 ppm thiophene

color

APHA: ≤10

refractive index

n20/D 1.5000-1.5020
n20/D 1.501 (lit.)

bp

80 °C (lit.)

mp

5.5 °C (lit.)

transition temp

solidification point ≥5.2 °C

density

0.874 g/mL at 25 °C (lit.)

cation traces

Al: ≤0.5 mg/kg
B: ≤0.02 mg/kg
Ba: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.01 mg/kg
Fe: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.01 mg/kg
Sn: ≤0.1 mg/kg
Zn: ≤0.01 mg/kg

SMILES string

c1ccccc1

InChI

1S/C6H6/c1-2-4-6-5-3-1/h1-6H

InChI key

UHOVQNZJYSORNB-UHFFFAOYSA-N

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General description

Benzene is widely used as a solvent. Its emission from various tropical biomass species has been investigated. GC/MS determination indicated that benzene is one of the major contributor for biomass burning emission factor. Its electronic spectra has been investigated by CNDO method. Microwave spectra of isotopic 1:1 clusters of benzene with water (H2O, D2O and HDO) has been investigated.

Application

Benzene may be employed in the preparation of carbon fibers, via pyrolysis along with hydrogen at about 1100°C. It was used in the preparation of highly conductive molecular junctions. These junctions were fabricated by direct binding of benzene molecules to the Pt electrodes without using anchoring groups.

Other Notes

Pertains only in Germany: unversteuert

Signal Word

Danger

Hazard Classifications

Aquatic Chronic 3 - Asp. Tox. 1 - Carc. 1A - Eye Irrit. 2 - Flam. Liq. 2 - Muta. 1B - Skin Irrit. 2 - STOT RE 1

Target Organs

Blood

WGK

WGK 3

Regulatory Information

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Enza Palma et al.
New biotechnology, 53, 41-48 (2019-07-01)
Microbial electrochemical technologies (MET) are increasingly being considered for in situ remediation of contaminated groundwater. However, their application potential for the simultaneous treatment of complex mixtures of organic and inorganic contaminants, has been only marginally explored. Here we have analyzed
Mohammed F Tawfiq et al.
Journal of environmental sciences (China), 33, 239-244 (2015-07-05)
Atmospheric pollution and global warming issues are increasingly becoming major environmental concerns. Fire is one of the significant sources of pollutant gases released into the atmosphere; and tropical biomass fires, which are of particular interest in this study, contribute greatly
Benzene forms hydrogen bonds with water.
Suzuki S, et al.
Science, 257(5072), 942-945 (1992)
Use of the CNDO method in spectroscopy. I. Benzene, pyridine, and the diazines.
Del Bene J and Jaffe HH.
J. Chem. Phys. , 48(44), 1807-1813 (1968)
Filamentous growth of carbon through benzene decomposition.
Oberlin A, et al.
Journal of Crystal Growth, 32(3), 335-349 (1976)
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