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Topic summary

Ethylbenzene

Ethylbenzene
Names Preferred IUPAC name
Ethylbenzene
Other names
Ethylbenzol; Phenylethane; alpha-Methyltoluene; EB
Identifiers
3D model (JSmol)
Abbreviations EB
PhEt 1901871 ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard100.002.591KEGG
RTECS number
  • DA0700000
UNII
  • InChI=1S/C8H10/c1-2-8-6-4-3-5-7-8/h3-7H,2H2,1H3
    Key: YNQLUTRBYVCPMQ-UHFFFAOYSA-N
  • InChI=1/C8H10/c1-2-8-6-4-3-5-7-8/h3-7H,2H2,1H3
    Key: YNQLUTRBYVCPMQ-UHFFFAOYAM
  • CCc1ccccc1
Properties C8H10Molar mass106.168 g·mol Appearance colorless liquid Odoraromatic Density0.8665 g/mL Melting point−95 °C (−139 °F; 178 K) Boiling point136 °C (277 °F; 409 K) 0.015 g/100 mL (20 °C) log P3.27 Vapor pressure9.998 mmHg −77.20·10 cm/mol 1.495 Viscosity0.669 cP at 20 °C 0.58 DThermochemistry 1.726 J/(gK) Hazards Occupational safety and health (OHS/OSH):
Main hazards
Flammable GHS labelling: DangerH225, H304, H320, H332, H335, H336, H351, H360, H373, H400, H411P201, P202, P210, P233, P240, P241, P242, P243, P260, P264, P271, P273, P280, P281, P301+P310, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P314, P331, P337+P313, P370+P378, P391, P403+P233, P403+P235, P405, P501NFPA 704 (fire diamond)
2
3
0
Flash point22.22 °C (72.00 °F; 295.37 K) 430 °C (806 °F; 703 K) Explosive limits1–7.8% Lethal dose or concentration (LD, LC): 5460 mg/kg 4000 ppm (rat, 4 hr) NIOSH (US health exposure limits):
PEL (Permissible)
TWA 100 ppm (435 mg/m)
REL (Recommended)
TWA 100 ppm (435 mg/m) ST 125 ppm (545 mg/m)
IDLH (Immediate danger)
800 ppm Related compounds styrene, toluene
Related compounds
benzene
ethylcyclohexane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ethylbenzene is an organic compound with the formulaC8H10 or C6H5CH2CH3. It is a highly flammable, colorless liquid with an odor similar to that of gasoline. This monocyclic aromatic hydrocarbon is important in the petrochemical industry as a reaction intermediate in the production of styrene, the precursor to polystyrene, a common plastic material. In 2012, more than 99% of ethylbenzene produced was consumed in the production of styrene.

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