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Hydrocarbons

M-Terphenyl

Also known as 1,3-Diphenylbenzene, 1,1':3',1''-Terphenyl, m-Diphenylbenzene

CAS 92-06-8Formula C18H14Molar mass 230.31 g/molEC 202-122-1
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 7 suppliers listed
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M-Terphenyl chemical structure, C18H14, CAS 92-06-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow needles from alc
Melting point
87 °C
Boiling point
363 °C
Density
1.2
Flash point
191 °C
HS code
290290
Category
Hydrocarbons
Illustrative photo, yellow pigment powder in an open kraft paper sack in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is M-Terphenyl?

Plain description, key identifiers and synonyms

M-terphenyl is a yellow solid. mp: 86-87 °C, bp: 365 °C. Density: 1.195 g/cm3. Insoluble in water. Usually shipped as a solid mixture with its isomers o-terphenyl and p-terphenyl that is used as a heat-transfer fluid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,3-diphenylbenzene
CAS number
92-06-8 CAS number cross-checkedOther or deprecated CAS: 26140-60-3, 8042-11-3
EC numbers
202-122-1, 247-477-3
Molecular formula
C18H14
UNII
WOI2PSS0KX
MDL number
MFCD00003059
InChIKey
YJTKZCDBKVTVBY-UHFFFAOYSA-N
InChI
InChI=1S/C18H14/c1-3-8-15(9-4-1)17-12-7-13-18(14-17)16-10-5-2-6-11-16/h1-14H
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C2=CC(=CC=C2)C3=CC=CC=C3

Synonyms

  • 1,3-Diphenylbenzene
  • 1,1':3',1''-Terphenyl
  • m-Diphenylbenzene
  • m-Triphenyl
  • 1,3-Terphenyl
  • Isodiphenylbenzene
  • Terphenyls
  • meta-terphenyl
  • 3-Phenylbiphenyl
  • 1,1'-Biphenyl, 3-phenyl-
  • Diphenylbenzene
  • Gilotherm OM 2
  • Benzene, m-diphenyl-
  • 3-Phenyl-1,1'-biphenyl
  • Terphenyl, m-
  • mTerphenyl
  • mTriphenyl
  • mDiphenylbenzene
  • 1,3Terphenyl
  • 1,3Diphenylbenzene
  • 1,1'Biphenyl, 3phenyl
  • 1,1':3',1''Terphenyl
  • 1,1':3',1''-Terphenyl (9CI)
  • Terbenzene
  • m-Terphenyl, 99%
Show all 30 synonyms
  • 1, 3-phenyl-
  • 1,1':3',1''-biphenyl
  • m-Terphenyl, analytical standard
  • 1,?1':3',?1''-?Terphenyl
  • 1~1~,2~1~:2~3~,3~1~-Terphenyl

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
Yellow needles from alcexp.
Odour
Faint, pleasant odor /Commercial terphenyl mixtures/exp.
Melting point
87 °Cexp.
Boiling point
363 °Cexp.
Density
1.2exp.
Flash point
191 °Cexp.
Solubility
1.51 mg/l at 25 °Cexp.
Vapour pressure
1.75 × 10⁻⁵ mm Hg extrapolated from experimentally-derived coefficientsexp.

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(-c2cccc(-c3ccccc3)c2)cc1

c1ccc(-c2cccc(-c3ccccc3)c2)cc1

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

368 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
100NFPA 704 rating

Hazard statements

  • H317May cause an allergic skin reaction.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (10)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • 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

M-Terphenyl suppliers

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

All 7 suppliers
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Where suppliers are based

7 suppliers in 3 countries

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M-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

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).

Partially hydrogenated terphenyl is used mainly as a dye carrier for pressure sensitive recording materials and copy paper, and as a heat transfer oil.

Industrial uses: Heat transferring agent, Intermediate.

How it is made

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 M-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 M-Terphenyl is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is M-Terphenyl?

M-terphenyl is a yellow solid. mp: 86-87 °C, bp: 365 °C. Density: 1.195 g/cm3. Insoluble in water. Usually shipped as a solid mixture with its isomers o-terphenyl and p-terphenyl that is used as a heat-transfer fluid.

What is the CAS number of M-Terphenyl?

The CAS registry number of M-Terphenyl is 92-06-8. Other or deprecated CAS numbers: 26140-60-3, 8042-11-3.

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

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

What is M-Terphenyl used for?

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.

Is M-Terphenyl hazardous?

M-Terphenyl carries the GHS signal word "Warning". Main hazards: may cause an allergic skin reaction, very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of M-Terphenyl?

M-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 M-Terphenyl?

CompoundList lists 7 suppliers of M-Terphenyl in United States, China and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of M-Terphenyl?

Suppliers quote M-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 M-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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