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1,4-Dioxin

Also known as p-Dioxin, 1,4-dioxine, 1,4-dioxame

CAS 290-67-5Formula C4H4O2Molar mass 84.07 g/mol
1,4-Dioxin chemical structure, C4H4O2, CAS 290-67-5
2D chemical structure

Key facts

What buyers check first

CAS number
290-67-5
Formula
C4H4O2
Molar mass
84.07 g/mol
HS code
293299
Category
Heterocyclic building blocks

What is 1,4-Dioxin?

Plain description, key identifiers and synonyms

1,4-dioxine is an oxacycle that is 4H-pyran in which the methylene group at position 4 is replaced by an oxygen. Non-aromatic.

1,4-Dioxin is a heterocyclic, organic, antiaromatic compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,4-dioxine
CAS number
290-67-5 CAS number cross-checked
Molecular formula
C4H4O2
UNII
ZD32358XMG
InChIKey
KVGZZAHHUNAVKZ-UHFFFAOYSA-N
InChI
InChI=1S/C4H4O2/c1-2-6-4-3-5-1/h1-4H
SMILES (canonical and isomeric)
C1=COC=CO1

Synonyms

  • p-Dioxin
  • 1,4-dioxine
  • 1,4-dioxame
  • 1,4-dioxacyclohexa-2,5-diene

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
84.07 g/molcalc.
Exact mass
84.0211 Dacalc.
LogP (octanol/water)
0.98calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
1calc.
Aromatic rings
0calc.
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, C1=COC=CO1

C1=COC=CO1

1 ring, 6 atoms. This chemical is the scaffold itself.

No other chemical in our database has this scaffold.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

1,4-Dioxin suppliers

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

No supplier listings yet

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1,4-Dioxin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 1,4-Dioxin is traded under.

HS 2932.99Indicative HS code

Heterocyclic compounds with oxygen hetero-atom(s) only, other

World exports in 2024
$3.81B
+10.3% vs 2023, imports $7.05B
2019 to 2024
Top exporters
  1. China28.9%
  2. Switzerland * partner reported12.7%
  3. Germany7.8%
Top importers
  1. United States49.7%
  2. China11.9%
  3. India * partner reported3.3%

* Partner reported figures, a lower bound.

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

The HS code shown for 1,4-Dioxin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 1,4-Dioxin, based on the data on this page

What is 1,4-Dioxin?

1,4-dioxine is an oxacycle that is 4H-pyran in which the methylene group at position 4 is replaced by an oxygen. Non-aromatic.

What is the CAS number of 1,4-Dioxin?

The CAS registry number of 1,4-Dioxin is 290-67-5.

What is the molecular formula and weight of 1,4-Dioxin?

The molecular formula of 1,4-Dioxin is C4H4O2 and its molar mass is 84.07 g/mol.

What is 1,4-Dioxin used for?

Known uses and roles of 1,4-Dioxin include building blocks in research and laboratory, screening compounds in research and laboratory and pigment.

Is 1,4-Dioxin hazardous?

No GHS hazard classification for 1,4-Dioxin is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of 1,4-Dioxin?

1,4-Dioxin is usually classified under HS code 293299 (Heterocyclic compounds with oxygen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 1,4-Dioxin?

Post a free request on CompoundList and suppliers of 1,4-Dioxin will send you quotes. Your contact details stay private until you accept a quote.

What is the price of 1,4-Dioxin?

Suppliers quote 1,4-Dioxin 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 1,4-Dioxin

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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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