Terphenyl
Names | |
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IUPAC name
1,4-Diphenylbenzene
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Other names
p-Terphenyl; 1,4-Diphenylbenzene; para-Diphenylbenzene; p-Diphenylbenzene; para-Triphenyl; p-Triphenyl
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Identifiers | |
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3D model (JSmol)
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ChemSpider |
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ECHA InfoCard | 100.043.146 |
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
C18H14 | |
Molar mass | 230.310 g·mol−1 |
Appearance | White powder[1] |
Density | 1.24 g/cm3 |
Melting point | 212 to 214 °C (414 to 417 °F; 485 to 487 K)[1] 212-213 °C[3] |
Boiling point | 389 °C (732 °F; 662 K)[3] |
Insoluble[1] | |
Refractive index (nD)
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1.65[2] |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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Iritant (Xi) |
NFPA 704 (fire diamond) | |
Flash point | 207 °C (405 °F; 480 K)[3] |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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C 9 mg/m3 (1 ppm)[4][5][6] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Terphenyls are a group of closely related aromatic hydrocarbons. Also known as diphenylbenzenes or triphenyls, they consist of a central benzene ring substituted with two phenyl groups. The three isomers are ortho-terphenyl, meta-terphenyl, and para-terphenyl. Commercial grade terphenyl is generally a mixture of the three isomers. This mixture is used in the production of polychlorinated terphenyls, which were formerly used as heat storage and transfer agents.[1]
p-Terphenyl is the most common isomer. It is used as a laser dye and a sunscreen ingredient.[1]
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ortho-Terphenyl
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meta-Terphenyl
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para-Terphenyl
See also
References
- ^ a b c d e p-Terphenyl at chemicalland21.com
- ^ [1]
- ^ a b c p-Terphenyl at Sigma-Aldrich
- ^ NIOSH Pocket Guide to Chemical Hazards. "#0591". National Institute for Occupational Safety and Health (NIOSH).
- ^ NIOSH Pocket Guide to Chemical Hazards. "#0592". National Institute for Occupational Safety and Health (NIOSH).
- ^ NIOSH Pocket Guide to Chemical Hazards. "#0593". National Institute for Occupational Safety and Health (NIOSH).
External links
- p-Terphenyl at the Oregon Laser Medical Center
- o-Terphenyl, m-Terphenyl, p-Terphenyl at Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health