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Sigma-Aldrich

Benzene

ACS reagent, ≥99.0%

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About This Item

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:
329753940
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

vapor density

2.77 (vs air)

vapor pressure

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

Assay

≥99.0%

form

liquid

autoignition temp.

1043 °F

expl. lim.

8 %

impurities

H2SO4, passes test (darkened)
 thiophene, passes test (limit ∼1ppm)
≤0.005% S compounds
≤0.05% water (Karl Fischer)

evapn. residue

≤0.001%

color

APHA: ≤10

refractive index

n20/D 1.501 (lit.)

bp

80 °C (lit.)

mp

5.5 °C (lit.)

density

0.874 g/mL at 25 °C (lit.)

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 a monocyclic aromatic compound used as a solvent in chemical reactions. It is an essential raw material for fuels, rubber and plastics products, detergents, pesticides, and pharmaceuticals.

Application

Benzene can be used as a solvent in the:
  • Heck Reaction of vinyl bromides with styrenes to synthesize functionalized 1,3-dienes.
  • Gallium-catalyzed reductive lactonization of γ-keto acids to γ-lactone derivatives.
  • Anionic polymerization of styrene and 1,3-butadiene in the presence of phosphazene as a base.

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

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

12.2 °F

Flash Point(C)

-11 °C

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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David Galbraith et al.
Critical reviews in toxicology, 40 Suppl 2, 1-46 (2010-10-14)
Over the last century, benzene has been a well-studied chemical, with some acute and chronic exposures being directly associated with observed hematologic effects in humans and animals. Chronic heavy exposures to benzene have also been associated with acute myelogenous leukemia
Deborah C Glass et al.
Occupational and environmental medicine, 71(4), 266-274 (2014-02-18)
Benzene exposure has been associated with increased risk of leukaemia and myelodysplastic syndrome. Existing studies are sparse for other lymphohaematopoietic cancer subtypes, such as myeloproliferative disease (MPD) and the related chronic myeloid leukaemia (CML). We pooled data from three petroleum
Audrey Smargiassi et al.
Environmental research, 132, 38-45 (2014-04-20)
The acute cardiorespiratory effects of air quality among children living in areas with considerable heavy industry have not been well investigated. We conducted a panel study of children with asthma living in proximity to an industrial complex housing two refineries
Jelle Vlaanderen et al.
Environmental health perspectives, 119(2), 159-167 (2010-10-01)
The use of occupational cohort studies to assess the association of benzene and lymphoma is complicated by problems with exposure misclassification, outcome classification, and low statistical power. We performed meta-analyses of occupational cohort studies for five different lymphoma categories: Hodgkin
Cliona M McHale et al.
Carcinogenesis, 33(2), 240-252 (2011-12-15)
Benzene causes acute myeloid leukemia and probably other hematological malignancies. As benzene also causes hematotoxicity even in workers exposed to levels below the US permissible occupational exposure limit of 1 part per million, further assessment of the health risks associated
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