Benzene

CAS No. 71-43-2

Formula: C6H6
Basic Info

Benzene is a natural constituent of crude oil, and is one of the most elementary petrochemicals. It is used mainly as an intermediate to make other chemicals. About 80% of benzene is consumed in the production of three chemicals, ethylbenzene, cumene, and cyclohexane. As a gasoline (petrol) additive, benzene increases the octane rating and reduces knocking.

Formula
C6H6
Molecular Weight
78.1118
Exact Mass
78.047
LogP
1.6866
PSA
0
Synonyms

Phene

Benzole

Benzolo

Benzen

Annulene

Fenzen

Benzeen

[6]Annulene (not recommended)

Benzol (historic/German)

Cyclohexa-1,3,5-triene

1,3,5-Cyclohexatriene

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Properties
Appearance & Physical State
clear colorless liquid with a petroleum-like odor
Density
0.8786
Boiling Point
80ºC
Melting Point
5.5ºC
Flash Point
-11ºC
Refractive Index
1.5011
Water Solubility
0.18 g/100 mL
Stability
Stable. Substances to be avoided include strong oxidizing agents, sulfuric acid, nitric acid, halogens. Highly flammable.
Storage Condition
0-6ºC
Vapor Density
2.77 (vs air)
Vapor Pressure
166 mm Hg ( 37.7 °C)
Safety Info
RTECS
CY1400000
Safety Statements
S53-S45
WGK Germany
3
Risk Statements
R45; R46; R11; R36/38; R48/23/24/25; R65
HS Code
2707100000
RIDADR
UN 1114 3/PG 2
Hazard Class
3
Packing Group
II
Caution Statement
P201; P210; P280; P308 + P313; P370 + P378; P403 + P235
Hazard Codes
Spectrum
NMR Spectrum 1H NMR : parameter in CDCl3
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IR Spectrum IR : liquid film
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Mass Spectrum Mass
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Raman Spectrum Raman : 4880 A,100M,liquid
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ESR Spectrum ESR : ANION RADICAL, REDUCTION WITH K-NA IN THF-DME
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Toxicity
SKIN/EYE IRRITATION DATA
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Type of Test
Open irritation test
Exposure Route
Administration onto the skin
Species Observed
Rodent - rabbit
Dose/Duration
15 mg/24H
Toxic Effects
--
Reference
American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962
SKIN/EYE IRRITATION DATA
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Type of Test
Standard Draize test
Exposure Route
Administration onto the skin
Species Observed
Rodent - rabbit
Dose/Duration
20 mg/24H
Toxic Effects
--
Reference
Prehled Prumyslove Toxikologie; Organicke Latky, Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,25,1986
SKIN/EYE IRRITATION DATA
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Type of Test
Standard Draize test
Exposure Route
Administration into the eye
Species Observed
Rodent - rabbit
Dose/Duration
88 mg
Toxic Effects
--
Reference
AMA Archives of Industrial Health. (Chicago, IL) V.11-21, 1955-60. For publisher information, see AEHLAU. Volume(issue)/page/year: 14,387,1956

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