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Synthetic aroma chemicals

Diphenyl ether

Also known as Diphenyl oxide, Phenoxybenzene, Phenyl ether

CAS 101-84-8Formula C12H10OMolar mass 170.21 g/molEC 202-981-2
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 106 suppliers listed
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Diphenyl ether chemical structure, C12H10O, CAS 101-84-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals or liquid
Melting point
26.9 °C
Boiling point
258 °C
Density
1.0661 g/cm³ at 30 °C
Flash point
115 °C
HS code
290930
Category
Synthetic aroma chemicals
UN number
UN 3077
Illustrative photo, colourless crystals beside a jumbo bulk bag in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Diphenyl ether?

Plain description, key identifiers and synonyms

Diphenyl ether is an aromatic ether in which the oxygen is attached to two phenyl substituents. It has been found in muscat grapes and vanilla. It has a role as a plant metabolite.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
phenoxybenzene
CAS number
101-84-8 CAS number cross-checkedOther or deprecated CAS: 32576-61-7
EC number
202-981-2
Molecular formula
C12H10O
UNII
3O695R5M1U
MDL number
MFCD00003034
INCI name
DIPHENYL ETHER
InChIKey
USIUVYZYUHIAEV-UHFFFAOYSA-N
InChI
InChI=1S/C12H10O/c1-3-7-11(8-4-1)13-12-9-5-2-6-10-12/h1-10H
SMILES (canonical and isomeric)
C1=CC=C(C=C1)OC2=CC=CC=C2

Synonyms

  • Diphenyl oxide
  • Phenoxybenzene
  • Phenyl ether
  • Benzene, 1,1'-oxybis-
  • Diphenylether
  • Oxybisbenzene
  • Phenyl oxide
  • Biphenyl oxide
  • Geranium crystals
  • Oxydiphenyl
  • Chemcryl JK-EB
  • Benzene, phenoxy-
  • 1,1'-Oxybis(benzene)
  • 1,1'-Oxybisbenzene
  • Ether, diphenyl
  • phenoxy benzene
  • Phenyl ether (vapor)
  • Oxydibenzene
  • 1,1'-oxydibenzene
  • Ether, diphenyl-
  • Phenyl ether, vapor
  • Diphenylaether
  • Diphenyloxid
  • phenoxy-benzene
  • 1,1'-oxybis-benzene
Show all 38 synonyms
  • diphenyloxide
  • diphenyl-ether
  • Propofol EP Impurity I
  • Propofol EP Impurity I, <br>Nalidixic acid EP Impurity D
  • diphenyether
  • phenylether
  • di-phenyl ether
  • 4-phenoxybenzene
  • 1-Phenoxybenzene
  • PhOPh
  • 1-phenoxy benzene
  • (4-Phenoxy)benzene
  • Phenyl ether, 8CI

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 crystals or liquidexp.
Odour
Geranium-like odorexp.
Melting point
26.9 °Cexp.
Boiling point
258 °Cexp.
Density
1.0661 g/cm³ at 30 °Cexp.
Flash point
115 °Cexp.
Autoignition temperature
618 °Cexp.
Solubility
In water, 18 mg/L at 25 °Cexp.
Vapour pressure
0.0213 mm Hg at 25 °Cexp.

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
170.21 g/molcalc.
Exact mass
170.0732 Dacalc.
LogP (octanol/water)
3.48calc.
Topological polar surface area
9.23 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
2calc.
Heavy atoms
13calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)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(Oc2ccccc2)cc1

c1ccc(Oc2ccccc2)cc1

2 rings, 13 atoms. This chemical is the scaffold itself.

9,579 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
110NFPA 704 rating

Hazard statements

  • H319Causes serious eye irritation.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (7)
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077
Transport hazard class
9
Packing group
III

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

Diphenyl ether suppliers

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

All 106 suppliers
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Where suppliers are based

106 suppliers in 20 countries

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Diphenyl ether 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

Perfumery, particularly soaps, heat-transfer medium resins for laminated electrical insulation, chemical intermediate for such reactions as halogenation, acylation, alkylation.

Commonly used dye carrier. (From table).

Employed as a processing aid in the production of polyesters, several polybromine derivatives of diphenyl ether are used as fire retardants.

Used in large quantities in soap perfumes. However, its main application is as a heat-transfer medium (eutectic mixture with diphenyl).

Industrial uses: Intermediate, Fragrance, Heat transferring agent, Processing aids not otherwise specified, Surfactant (surface active agent).

Consumer uses: Fragrance.

Cosmetic ingredient, INCI name DIPHENYL ETHER(fragrance)

Roles

  • eukaryotic metabolite
  • metabolite
  • plant metabolite

Functional uses

  • Deodorizer
  • Flame retardant
  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Fragrance

How it is made

Prepared by heating sodium phenolate with chlorobenzene.

Reaction of bromobenzene and sodium phenate heated under pressure.

By heating potassium phenolate with bromobenzene or with chlorobenzene at elevated temperatures.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

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 Diphenyl ether is traded under.

HS 2909.30Indicative HS code

Aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives

World exports in 2024
$470M
−2.2% vs 2023, imports $432M
2019 to 2024
Top exporters
  1. China45.7%
  2. Germany15.7%
  3. India * partner reported9.9%
Top importers
  1. United States14.3%
  2. China11.8%
  3. India * partner reported8.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Diphenyl ether, based on the data on this page

What is Diphenyl ether?

Diphenyl ether is an aromatic ether in which the oxygen is attached to two phenyl substituents. It has been found in muscat grapes and vanilla. It has a role as a plant metabolite.

What is the CAS number of Diphenyl ether?

The CAS registry number of Diphenyl ether is 101-84-8. Other or deprecated CAS numbers: 32576-61-7.

What is the molecular formula and weight of Diphenyl ether?

The molecular formula of Diphenyl ether is C12H10O and its molar mass is 170.21 g/mol.

What is Diphenyl ether used for?

Perfumery, particularly soaps, heat-transfer medium resins for laminated electrical insulation, chemical intermediate for such reactions as halogenation, acylation, alkylation. Commonly used dye carrier. (From table).

Is Diphenyl ether hazardous?

Diphenyl ether carries the GHS signal word "Warning". Main hazards: causes serious eye irritation, 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 Diphenyl ether?

Diphenyl ether is usually classified under HS code 290930 (Aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diphenyl ether?

CompoundList lists 106 suppliers of Diphenyl ether in China, United States, India, Germany and 16 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Diphenyl ether in India?

17 suppliers in India list Diphenyl ether on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Diphenyl ether?

Suppliers quote Diphenyl ether 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 Diphenyl ether

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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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