p-TERPHENYL (4-PHENYLBIPHENYL)

p-TERPHENYL

PRODUCT IDENTIFICATION

CAS NO.

92-94-4

p-TERPHENYL

EINECS NO.

202-205-2

FORMULA

C₆H₅C₆H₄C₆H₅

MOL WT.

230.30

H.S. CODE

2902.90.9000

TOXICITY

SYNONYMS

1,1':4',1''-Terphenyl; Pyrogallol tannin;

p-Diphenylbenzene; 4-Phenylbiphenyl; 4-Phenyldiphenyl; 1,4-Diphenylbenzene;

SMILES

C1=CC=C(C=C1)C2=CC=C(C=C2)C3=CC=CC=C3

CLASSIFICATION

EXTRA NOTES

Other RN:75831-65-1, 94363-13-0

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white powder

MELTING POINT

212 ~ 214 C

BOILING POINT

389 C

SPECIFIC GRAVITY

SOLUBILITY IN WATER

insoluble

VAPOR DENSITY

AUTOIGNITION

NFPA RATINGS

Health hazard: 2, Fire: 1, Reactivity Hazard: 0

REFRACTIVE INDEX

FLASH POINT

STABILITY

Stable under ordinary conditions.

EXTERNAL LINKS & GENERAL DESCRIPTION

USA.gov - p-Terphenyl

Wikipedia Linking - Terphenyl

Google Scholar Search - p-Terphenyl

U.S. National Library of Medicine - p-Terphenyl

PubChem Compound Summary - p-Terphenyl

KEGG (Kyoto Encyclopedia of Genes and Genomes) - p-Terphenyl

ChEBI (http://www.ebi.ac.uk/chebi/) - p-Terphenyl

NCBI (http://www.ncbi.nlm.nih.gov/) - p-Terphenyl

EPA - Substance Registry Services - p-Terphenyl

Local:
Terphenyl is an aromatic hydrocarbon consisting of three benzene rings connected to each other in either ortho, meta or para positions without any additional functionalization. This structure does not allow the fusion of benzene ring. Terphenyl structure is therefore not very reactive. Though pure terphenyl is a white crystalline solid, commercial grades are light yellow waxy-like flakes at room temperature, with a faint, pleasant odour. It is insoluble in water. Commercial mixture grade consists of generally o-terphenyl 2-10%, m- 45-49%, p- 25-35% and higher polyphenyls 2 to 18% with trace amounts of bidiphenyl.

Product	o-Terphenyl	m-Terphenyl	p-Terphenyl
CAS RN	84-15-1	92-06-8	92-94-4
Melting point	56.2 C	87.5 C	212.7 C
Boiling point	332 C	365 C	376 C

Terphenyl is used as a preservative to prevent the growth of molds and fungus in combination with other antioxidants. Terphenyl is a starting material for the production of polychlorinated terphenyls, which are once used industrially as heat storage and transfer agents. Terphenyl is also used as an intermediate for the production of target organic compounds such as non-spreading lubricants, emulsifiers, optical brighteners, crop protection products, and plastics. m-Terphenyl is used in thermal printing material and as a coolant in nuclear reactors, and p-terphenyl as a laser dye and a sunscreen lotion component. It is used as a particle of radiation detector which operates through emission of light flashes (the emission maximum at 343 nm, lower maxima at 325 and 327 nm) that are detected by a photosensitive device. Some terphenyl derivatives are under study for useful as a pharmaceutical ingredient such as immunosuppressive, antiinflammatory and antitumor agents. Fluorine-substituted terphenyls are used as a component of liquid crystalline for high voltage holding ratio, low threshold voltage, and broad temperature range layers applications.

SALES SPECIFICATION

APPEARANCE

white powder

PURITY

99.0% min

MELTING POINT

210 ~ 214 C

TRANSPORTATION

PACKING

HAZARD CLASS

9 (Packing Group:III)

UN NO.

3077

SAFETY INFORMATION

HAZARD OVERVIEW

GHS (Globally Harmonised System) Classification: Skin irritation. Eye irritation. Specific target organ toxicity - single exposure. Acute aquatic toxicity. Hazard statements: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Very toxic to aquatic life.

GHS

SIGNAL WORD

Warning

PICTOGRAMS