Terphenyl

para-Terphenyl
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) 92-06-8 (meta) 84-15-1 (ortho) 26140-60-3 (unspec.)
PubChem	7115
Jmol-3D images	Image 1
SMILES C1=CC=C(C=C1)C2=CC=C(C=C2)C3=CC=CC=C3
Properties
Molecular formula	C18H14
Molar mass	230.3 g mol−1
Appearance	White powder[1]
Density	1.24 g/cm^3
Melting point	212-214 °C[1] 212-213 °C[2]
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]
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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]

• 

  ortho-Terphenyl

• 

  meta-Terphenyl

• 

  para-Terphenyl

See also

• Diphenyl
• Terpyridine
• Terthiophene

References

1. ^ ^{a b c d e} p-Terphenyl at chemicalland21.com
2. ^ ^{a b c} p-Terphenyl at Sigma-Aldrich

External links

• p-Terphenyl at the Oregon Laser Medical Center