Diphenyl oxide

CAS 101-84-8

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$59M

Top sourceChina 51%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290930 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290930, which covers 119 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 51%ChinaIN 23%IndiaIT 12%ItalyJP 9%JapanCA 2%Canada

Spain
Israel
Netherlands
Taiwan
Germany
Ireland
Switzerland
Ukraine
Mexico
United Kingdom
Australia

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Dow Chemical

Domestic parents -- activity not disclosed (4)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Aceto Us

Alpek Polyester Usa

Eastman Chemical

Reckitt Benckiser

EPA-registered importers (5)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Reckitt Benckiser Group · GB United Kingdom

Berje

Colgate-Palmolive

Givaudan Fragrances

Henkel Us Operations

Why It Matters

Sectors

TextilesConsumer ProductsCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 5 sectors as 4 functional roles.

•Heat transferring agent in All Other Basic Organic Chemical ManufacturingUse—non-incorporative activities
•Intermediate in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
•Fragrance in Not Known or Reasonably Ascertainable (100%)Not Known or Reasonably Ascertainable
•Heat transferring agent in All Other Chemical Product and Preparation Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
•Surfactant (surface active agent) in Petrochemical Manufacturing (80%)Processing as a reactant
•Fragrance in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Fragrance in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.01/gAaron Chemicals LLC

CountryHong Kong

Pack$180.00 / 25 kg

Purity99%

Vendors21 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

20 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.01	500 g	99%
A2B Chem LLC	United States	$0.02	1 kg	99%
AA BLOCKS	United States	$0.02	1 kg	99%
Sigma-Aldrich (Rush Stock)	Germany	$0.03	25 kg	99%
Sigma-Aldrich	Germany	$0.03	25 kg	99%
Ambeed, Inc.	United States	$0.03	1 kg	99%
Fluorochem EU	Germany	$0.04	1 kg	95%
Fluorochem UK	United Kingdom	$0.04	1 kg	95%
Apollo Scientific UK	United Kingdom	$0.04	1 kg	95%
ALFA AESAR	Germany	$0.04	2.5 kg	99%
AstaTech, Inc	United States	$0.05	500 g	95%
Angene International Limited	United States	$0.08	500 g	99%
AK Scientific Specialized	United States	$0.09	500 g	98%
AK Scientific, Inc.	United States	$0.12	500 g	99%
Aldlab	United States	$0.99	25 g	95%
Labotest KG	Germany	$217.80	5000 mg	90%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	95%
Angene	China → Hong Kong	$4266.67	30 mg	99%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS101-84-8

PubChem CID7583

DTXSIDDTXSID9021847

FormulaC12H10O

Mol. Weight170.21 g/mol

SMILESC1=CC=C(C=C1)OC2=CC=CC=C2

Data Sources

EPA CompTox (DSSTox) · DTXSID9021847Retrieved 2026-04-06
PubChem · compound 7583Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Diphenyl oxide (CAS 101-84-8) https://chemicalindependence.com/chemical/101-84-8/ EPA CompTox (DSSTox): DTXSID9021847. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9021847 PubChem: 7583. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7583 EPA Chemical Data Reporting: 101-84-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 101-84-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290930 for CAS 101-84-8. Reporting year: 2024. https://usatrade.census.gov/