| para-Terphenyl | |
|---|---|
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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 | |
| CAS number | 92-94-4, (para) 92-06-8 (meta) 84-15-1 (ortho) 26140-60-3 (unspec.) |
| PubChem | 7115 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C18H14 |
| Molar mass | 230.3 g mol−1 |
| Appearance | White powder[1] |
| Density | 1.24 g/cm^3 |
| Melting point | |
| Boiling point |
389 °C[2] |
| Solubility in water | Insoluble[1] |
| Hazards | |
| R-phrases | R36/37/38 R50/53 |
| S-phrases | S26 S60 S61 |
| Main hazards | Iritant (Xi) |
| Flash point | 207 °C[2] |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
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]