Basic information
- Name:
p-Terphenyl
- CAS No.:
92-94-4
- Molecular Structure:
- Formula:
- C18H14
- Molecular Weight:
- 230.32
- Deleted CAS:
- 75831-65-1|94363-13-0
- Synonyms:
- 1,1':4',1''-Terphenyl;1,1'-Biphenyl, 4-phenyl-;1,4-Diphenylbenzene;4-Phenyl-1,1'-biphenyl;4-Phenylbiphenyl;NSC 6810;PT;PTP;Santowax P;T 3203;TP (scintillator);p-Diphenylbenzene;p-Phenylene trimer;
- EINECS:
- 202-205-2
- Density:
- 1.043 g/cm3
- Melting Point:
- 212-213 °C(lit.)
- Boiling Point:
- 400 °C at 760 mmHg
- Flash Point:
- 188.1 °C
- Solubility:
- practically insoluble in water
- Appearance:
- white solid
- Hazard Symbols:
Xi- Risk Codes:
- 36/37/38-37/38-36-50/53
- Safety Description:
- 26-37-61-60 Details
- Transport Information:
- UN 3077 9/PG 3
- Method:
- Zone-melting.
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Chemistry
Molecular Formula: C18H14
Molecular Weight: 230.3 g/mol
EINECS: 202-205-2
Density: 1.23
Flash point: 207 °C
Appearance: White solid
Vapor density: 7.95 (vs air)
Melting point: 212-213 °C(lit.)
Boiling point: 389 °C(lit.)
Water Solubility: Practically insoluble
Structure of p-Terphenyl (CAS NO.92-94-4):
IUPAC Name: 1,4-Diphenylbenzene
Product Category of p-Terphenyl (CAS NO.92-94-4): Organics;Biphenyl & Diphenyl ether;Electroluminescence;Functional Materials
Uses
p-Terphenyl (CAS NO.92-94-4) is commonly polymerized with styrene to make a plastic phosphor, and its single crystals are used as scintillation counters.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rat | LDLo | oral | 500mg/kg (500mg/kg) | National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. Vol. 5, Pg. 26, 1953. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Moderately toxic by ingestion. Combustible when exposed to heat or flame. To fight fire, use water, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes: 
Xi
Risk Statements: 36/37/38-37/38-36-50/53
R36:Irritating to eyes.
R36/37/38:Irritating to eyes, respiratory system and skin.
R37/38:Irritating to respiratory system and skin.
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 26-37-61-60
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37:Wear suitable gloves.
S60:This material and its container must be disposed of as hazardous waste.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
Standards and Recommendations
OSHA PEL: CL 0.5 ppm
ACGIH TLV: TWA CL 0.5 ppm
Analytical Methods
For occupational chemical analysis use NIOSH: o-Terphenyl, 5021.
Specification
p-Terphenyl , its cas register number is 92-94-4. It also can be called 1,4-Diphenylbenzene ; 1,4-Diphenylbenzene ; 4-Phenylbiphenyl ; and 1,1':4',1''-Terphenyl .