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Aromatic building blocks

p-Terphenyl

Also known as 1,4-Diphenylbenzene, 1,1':4',1''-Terphenyl, p-Diphenylbenzene

CAS 92-94-4Formula C18H14Molar mass 230.31 g/molEC 202-205-2
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 26 suppliers listed
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p-Terphenyl chemical structure, C18H14, CAS 92-94-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless or light-yellow solid
Melting point
210.1 °C
Boiling point
376 °C
Density
1.234 AT 0 °C
Flash point
207.2 °C
HS code
290290
Category
Aromatic building blocks
Illustrative photo, colourless crystals in an open fibre drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is p-Terphenyl?

Plain description, key identifiers and synonyms

1,4-diphenylbenzene is a para-terphenyl that consists of benzene attached to two phenyl units at positions 1 and 4 respectively.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,4-diphenylbenzene
CAS number
92-94-4 CAS number cross-checked
EC number
202-205-2
Molecular formula
C18H14
UNII
GWP218ZY6F
MDL number
MFCD00003061
InChIKey
XJKSTNDFUHDPQJ-UHFFFAOYSA-N
InChI
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
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C2=CC=C(C=C2)C3=CC=CC=C3

Synonyms

  • 1,4-Diphenylbenzene
  • 1,1':4',1''-Terphenyl
  • p-Diphenylbenzene
  • p-Triphenyl
  • 4-Phenylbiphenyl
  • para-terphenyl
  • 4-Phenyldiphenyl
  • Biphenyl, 4-phenyl-
  • Tannin from pyrogallol
  • 1,1'-Biphenyl, 4-phenyl-
  • 1,4-terphenyl
  • 4-phenyl-1,1'-biphenyl
  • PTP
  • p-Terphenyl (purified by sublimation)
  • Pyrogallol tannin
  • triphenyl-
  • PPP (scintillator)
  • Tannin pyrogallol
  • Terphenyl, p-
  • p-Phenylene trimer
  • 1,1':4',1"-Terphenyl
  • p-DIPHENYLBENZENE, SCINT
  • p-Terphenyl, analytical standard
  • p-Terphenyl, >=99.5% (HPLC)
  • p-Terphenyl suitable for scintillation
Show all 30 synonyms
  • 1,1'':4'',1''''-Terphenyl
  • 1~1~,2~1~:2~4~,3~1~-Terphenyl
  • p-Terphenyl Solution in Acetone, 1000?g/mL
  • p-Terphenyl Solution in Acetone, 1000ug/mL
  • p-Terphenyl, suitable for scintillation, >=98.5% (HPLC)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless or light-yellow solidexp.
Melting point
210.1 °Cexp.
Boiling point
376 °Cexp.
Density
1.234 AT 0 °Cexp.
Flash point
207.2 °Cexp.
Solubility
1.79 × 10⁻² mg/l at 25 °Cexp.
Vapour pressure
Very lowexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
230.31 g/molcalc.
Exact mass
230.1096 Dacalc.
LogP (octanol/water)
5.02calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
2calc.
Heavy atoms
18calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc(-c2ccc(-c3ccccc3)cc2)cc1

c1ccc(-c2ccc(-c3ccccc3)cc2)cc1

3 rings, 18 atoms. This chemical is the scaffold itself.

572 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H400Very toxic to aquatic life.
  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (18)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

p-Terphenyl suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 26 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

26 suppliers in 8 countries

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p-Terphenyl price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Polymerized with styrene to make a plastic phosphor, single crystals used as scintillation counters.

Chemical intermediate in manufacture of nonspreading lubricants, as nuclear reactor coolants, heat storage & transfer agents, has been used as component of sunscreen lotion.

Terphenyl mixtures are used industrially as heat storage and transfer agents, as textile dye carriers, and as intermediates in the production of nonspreading lubricants. From 1960-1970, technical grade terphenyls were used as coolants for nuclear reactors, whereas contemporary use has been in solar-heating systems. (Terphenyl mixtures).

How it is made

From para-dibromobenzene or bromobenzene & sodium. Method of purification: zone-melting.

Terphenyls are byproducts in the production of biphenyl by dehydrocondensation of benzene, they are found in the high-boiling fraction of the pyrolysis products. The o-derivative is readily separated from the terphenyl isomer mixture by distillation, m- and p-terphenyl distill together and the pure isomers can be obtained by zone refining.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code p-Terphenyl is traded under.

HS 2902.90Indicative HS code

Cyclic hydrocarbons, other

World exports in 2024
$612M
−6.1% vs 2023, imports $670M
2019 to 2024
Top exporters
  1. China28.0%
  2. Germany13.9%
  3. India * partner reported12.6%
Top importers
  1. Germany11.1%
  2. United States10.6%
  3. South Korea8.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for p-Terphenyl is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about p-Terphenyl, based on the data on this page

What is p-Terphenyl?

1,4-diphenylbenzene is a para-terphenyl that consists of benzene attached to two phenyl units at positions 1 and 4 respectively.

What is the CAS number of p-Terphenyl?

The CAS registry number of p-Terphenyl is 92-94-4.

What is the molecular formula and weight of p-Terphenyl?

The molecular formula of p-Terphenyl is C18H14 and its molar mass is 230.31 g/mol.

What is p-Terphenyl used for?

Polymerized with styrene to make a plastic phosphor, single crystals used as scintillation counters. Chemical intermediate in manufacture of nonspreading lubricants, as nuclear reactor coolants, heat storage & transfer agents, has been used as component of sunscreen lotion.

Is p-Terphenyl hazardous?

p-Terphenyl carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of p-Terphenyl?

p-Terphenyl is usually classified under HS code 290290 (Cyclic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy p-Terphenyl?

CompoundList lists 26 suppliers of p-Terphenyl in China, United States, Canada, United Kingdom and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of p-Terphenyl?

Suppliers quote p-Terphenyl on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle p-Terphenyl

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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