Terphenyl

*para*-Terphenyl
Names


IUPAC name 1,4-Diphenylbenzene
Other names p-Terphenyl; 1,4-Diphenylbenzene; para-Diphenylbenzene; p-Diphenylbenzene; para-Triphenyl; p-Triphenyl
Identifiers
CAS Number	92-94-4 (para)^Y 92-06-8 (meta)^N 84-15-1 (ortho)^N 26140-60-3 (unspecified)^N
3D model (Jmol)	Interactive image (para): Interactive image
ChemSpider	6848 (para)^N
PubChem	7115
InChI (para): InChI=1S/C18H14/c1-3-7-15(8-4-1)17-11-13-18(14-12-17)16-9-5-2-6-10-16/h1-14H^N Key: XJKSTNDFUHDPQJ-UHFFFAOYSA-N^N (para): InChI=1/C18H14/c1-3-7-15(8-4-1)17-11-13-18(14-12-17)16-9-5-2-6-10-16/h1-14H Key: XJKSTNDFUHDPQJ-UHFFFAOYAJ
SMILES C1=CC=C(C=C1)C2=CC=C(C=C2)C3=CC=CC=C3 (para): c1ccc(cc1)c2ccc(cc2)c3ccccc3
Properties
Chemical formula	C₁₈H₁₄
Molar mass	230.31 g·mol⁻¹
Appearance	White powder
Density	1.24 g/cm³
Melting point	212 to 214 °C (414 to 417 °F; 485 to 487 K) 212-213 °C
Boiling point	389 °C (732 °F; 662 K)
Solubility in water	Insoluble
Refractive index (n_D)	1.65
Hazards
Main hazards	Iritant (Xi)
R-phrases	R36/37/38 R50/53
S-phrases	S26 S60 S61
NFPA 704	1 2 0
Flash point	207 °C (405 °F; 480 K)
US health exposure limits (NIOSH):
PEL (Permissible)	C 9 mg/m³ (1 ppm)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N (what is ^YN ?)
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.

p-Terphenyl is the most common isomer. It is used as a laser dye and a sunscreen ingredient.

ortho-Terphenyl

meta-Terphenyl

para-Terphenyl

...
Wikipedia