Solvents - Aromatic Available — Bulk Only

Diphenyl Ether (Diphenyl Oxide)

CAS 101-84-8 · Formula C12H10O · MW 170.21 g/mol

A thermally stable aromatic ether serving as a high-temperature heat-transfer fluid and a fragrance fixative. It is used as a high-temperature heat-transfer medium, a chemical intermediate for surface-active agents and other derivatives, and a fragrance ingredient in soaps and perfumery.

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UN Number
UN 3077
Hazard Class
Class 9
HS Code
2909.30
At a Glance
Material Family
Solvents - Aromatic
Record Type
Pure compound
Primary Role
Solvency
Functional Roles
DIPHENYL ETHER
FRAGRANCE
Applications & Use Cases
  • Heat-transfer fluid: High-temperature heat-transfer medium.
  • Chemical intermediate: Feedstock for surfactants and derivatives.
  • Fragrance ingredient: Fixative/odorant in soaps and perfumery.
  • Dye carrier: Carrier in textile dyeing.
Physical Properties
Melting Point
27 °C
Boiling Point
258 °C at 760 mmHg
Density
1.07 at 27 °C
Solubility
Insoluble
Vapor Pressure
0.02 mmHg at 25 °C
Flash Point
115 °C
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 9 placard
UN / DOT NumberUN 3077
Hazard Class / DivisionClass 9
Proper Shipping NameEnvironmentally hazardous substance, solid, n.o.s.

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2909 . 30
Chapter 29
Organic chemicals
Heading 29.09
Internationally harmonized (WCO HS)
Subheading 2909.30
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
101-84-8
Molecular Formula
C12H10O
Molecular Weight
170.21 g/mol
IUPAC Name
phenoxybenzene
INCI Name
DIPHENYL ETHER
PubChem CID
InChI Key
USIUVYZYUHIAEV-UHFFFAOYSA-N
Synonyms & Trade Names
DIPHENYL ETHER 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 FEMA No. 3667
Full Description

Diphenyl ether (CAS 101-84-8), also called diphenyl oxide, is an aromatic ether. It is used as a high-temperature heat-transfer medium, a chemical intermediate for surface-active agents and other derivatives, and a fragrance ingredient in soaps and perfumery.

Frequently Asked Questions

What is diphenyl ether used for?

Diphenyl ether (diphenyl oxide) is an aromatic ether used as a high-temperature heat-transfer medium (often blended with biphenyl), as a chemical intermediate for surfactants and other derivatives, as a fragrance fixative/odorant in soaps and perfumery, and as a carrier in textile dyeing.

What are diphenyl ether herbicides?

Diphenyl ether herbicides are a class of agrochemical active ingredients built on a substituted diphenyl ether backbone (examples include oxyfluorfen, fomesafen, and acifluorfen). Diphenyl ether itself (CAS 101-84-8) is the parent aromatic ether and a chemical intermediate, not a finished herbicide.

What is the chemical formula and CAS of diphenyl ether?

Diphenyl ether is C12H10O, CAS 101-84-8, also called diphenyl oxide. It is an aromatic ether (two phenyl groups joined by an oxygen). Identity and physical properties are documented on the CoA and SDS.

Is diphenyl ether naturally occurring?

Diphenyl ether occurs in trace amounts in some natural sources such as certain plant volatiles, but the material RawSource supplies is manufactured to industrial specification. The CoA documents purity and identity for each lot.

How is diphenyl ether shipped and classified?

Diphenyl ether ships under UN 3077 (environmentally hazardous substance, solid, n.o.s., where applicable) and classifies under HS 2909.30 (aromatic ethers). The SDS and transport documentation accompany each bulk order; request the current SDS for full detail.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.