p-TERPHENYL

PRODUCT IDENTIFICATION
CAS NO.

92-94-4; 75831-65-1; 94363-13-0

p-TERPHENYL
EINECS NO. 202-205-2
FORMULA C6H5C6H4C6H5
MOL WT. 230.30
H.S. CODE  

TOXICITY

  
SYNONYMS 1,1':4',1''-Terphenyl; Pyrogallol tannin;
p-Diphenylbenzene; 4-Phenylbiphenyl; 4-Phenyldiphenyl; 1,4-Diphenylbenzene;

PRICE

U$3,500.- (25kgs)

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE white powder
MELTING POINT 212 - 214 C
BOILING POINT 389 C
SPECIFIC GRAVITY  
SOLUBILITY IN WATER insoluble
pH  
VAPOR DENSITY  
AUTOIGNITION

 
NFPA RATINGS  

REFRACTIVE INDEX

  
FLASH POINT

 
STABILITY

Stable under ordinary conditions.

GENERAL DESCRIPTION & APPLICATIONS

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
TRANSPORTATION
PACKING  
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26