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Diphenyl ether

Diphenyl ether
Diphenyl ether
Chemical Name:
Diphenyl ether
FEMA 3667;NSC 19311;AKOS 90362;Oxydiphenyl;phenyloxide;Oxydibenzol;Phenyl oxide;PHENYL ETHER;Oxydibenzene;biphenyloxide
Molecular Formula:
Formula Weight:
MOL File:

Diphenyl ether Properties

Melting point:
26 °C
Boiling point:
259 °C(lit.)
1.073 g/mL at 25 °C(lit.)
vapor density 
>5.86 (25 °C, vs air)
vapor pressure 
<1 mm Hg ( 20 °C)
refractive index 
n20/D 1.579(lit.)
Flash point:
>230 °F
storage temp. 
alcohol: soluble(lit.)
explosive limit
Water Solubility 
CAS DataBase Reference
101-84-8(CAS DataBase Reference)
NIST Chemistry Reference
Diphenyl ether(101-84-8)
EPA Substance Registry System
Benzene, 1,1'-oxybis-(101-84-8)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  N,Xi,T
Risk Statements  51/53-36/37/38-39/23/24/25-23/24/25-36/38-36
Safety Statements  60-61-57-37/39-26-45-36/37
RIDADR  UN 3077 9/PG 3
WGK Germany  2
RTECS  KN8970000
HazardClass  9
PackingGroup  III
Hazardous Substances Data 101-84-8(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
H401 Toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 2 P273, P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.

Diphenyl ether price More Price(19)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 240834 Diphenyl ether ≥99% 101-84-8 5g $33.8 2017-11-08 Buy
Sigma-Aldrich 240834 Diphenyl ether ≥99% 101-84-8 100g $63.4 2017-11-08 Buy
TCI Chemical P0177 Phenyl Ether >99.0%(GC) 101-84-8 25g $14 2017-12-01 Buy
TCI Chemical P0177 Phenyl Ether >99.0%(GC) 101-84-8 500g $19 2017-12-01 Buy
Alfa Aesar A15791 Diphenyl ether, 99% 101-84-8 250g $22.1 2017-11-08 Buy

Diphenyl ether Chemical Properties,Uses,Production


Diphenyl ether (diphenyl oxide) is a colorless liquid with a floral odor. It is a white, crystalline solid at temperatures below 80ºF (27ºC). It has low volatility, low solubility in water, and is stable at high temperatures. Avoid contact with oxidizing materials.
Liquid diphenyl oxide is used primarily in industry. It is used in the industrial setting as a heat transfer fluid. It is the major component of Dowtherm A® (an eutectic mixture of phenyl ether and biphenyl) and further as a chemical intermediate in the production of surface-active agents and hightemperature lubricants, and in perfumery due to its geranium-like odour (ACG99b). It is also used as a chemical intermediate in the manufacture of surfactants and fire retardants.
Diphenyl oxide (DPO) is manufactured using the direct phenol method.
synthesis of diphenyl ether

Chemical Properties

clear pale yellowish liquid after melting


Phenyl Ether is an Impurity of Propofol (P829750).


Diphenyl ether is widely used as a heat transfer agent and a dye carrier. It can be used alone or as a mixture with other materials. Because of its reactivity, It can also be used as a raw material or chemical intermediate to produce commercial products. Diphenyl ether is used in the production of:
  1. Diphenyl ether is employed as a processing aid in the production of polyesters. It acts as a chemical intermediate in the production of surface active agents and high temperature lubricants, fire retardants like polybrominated diphenyl ethers (PBDEs) and fragrance for detergents.
  2. Heat transfer media – like DOWTHERMTM fluids used for heating industrial processes
  3. Alkylated diphenyl oxides – used to make surfactants, greases and lubricants
  4. Halogenated diphenyl oxides – used in insecticides, wood preservatives, and flame retardants for appliance casings in consumer electronic products
  5. High temperature solvents
  6. Coatings
  7. Textile dye labeling
  8. Plastics – like ethylene-propylene-diene monomer (EPDM) rubber that is used for membrane roofing materials
  9. Diphenyl ether plays a vital role in the Ferrario reaction to produce phenoxathiin, which finds application in polyamide and polyimide production. Involving similar reactions, diphenyl ether is a significant side product in the high-pressure hydrolysis of chlorobenzene in the production of phenol.
  10. Diphenyl ether is found in alcoholic beverages. Diphenyl ether is present in muscat grapes, green tea, vanilla, lemon balm, buckwheat, potato chips and grilled beef. Diphenyl ether is a flavouring ingredient.


ChEBI: An aromatic ether in which the oxygen is attached to two phenyl substituents. It has been found in muscat grapes and vanilla.

General Description

Colorless liquid with a mild pleasant odor. May float or sink in water. Freezing point is 81°F.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Diphenyl oxide can react with oxidizing materials. . A vigorous reaction occurred between the ether and chlorosulfuric acid.

Health Hazard

Inhalation may cause nausea because of disagreeable odor. Contact of liquid with eyes causes mild irritation. Prolonged exposure of skin to liquid causes reddening and irritation. Ingestion produces nausea.

Fire Hazard

Diphenyl oxide is combustible.

Diphenyl ether Preparation Products And Raw materials

Raw materials

Preparation Products

Diphenyl ether Suppliers

Global( 240)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Dalian Richfortune Chemicals Co., Ltd
86-411-84820922, 84821539
86-411-84821380 China 491 57
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20810 55
Mainchem Co., Ltd.
0592-6210733 CHINA 3270 55
Beijing HuaYangZhicheng Technology Co., Ltd. 13716033033
010-56276266 China 4665 50
AOKBIO Inc. 021-68712331 QQ3286104197
021 68712331 China 327 55
Creasyn Finechem(Tianjin) Co., Ltd. 86-22-83945878,83945171,83945172
4008266163-06019 China 993 68
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96819 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40398 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30309 84
TCI (Shanghai) Development Co., Ltd. 800-988-0390
021-67121385 China 22830 81

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