Molekula
1,4-Dioxane
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1,4-Dioxane is a cyclic ether solvent used in industrial processes and laboratory applications. It dissolves cellulose esters and ethers, resins, oils, waxes and dyes, and has historically served as a stabilizer for chlorinated solvents such as 1,1,1-trichloroethane. It is a colorless, volatile liquid with moderate solubility in water and organic solvents. CAS: 123-91-1, Molecular formula: C4H8O2, Molecular weight: 88.11 g/mol. Stored at ambient temperature. Hazard classification: Danger. Molekula supplies 1,4-Dioxane from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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2.5 L — £46.50 per pack ex VAT · £55.80 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless liquid |
| Refractive Index | 1.4205 - 1.4235 |
| Water | ≤0.5% |
| Assay (GC) | ≥99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 12 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | Faint pleasant odor |
| Melting Point | 11.75 °C |
| Boiling Point | 101.2 °C |
| Density | 1.03 (relative, water = 1) |
| Vapour Pressure | 3.9 kPa at 20 °C |
| Refractive Index | 1.4224 |
| log P (octanol/water) | -0.27 |
Source: PubChem CID 31275 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 22652371 |
| CAS Number | 123-91-1 |
| IUPAC Name | 1,4-dioxane |
| EC Number | 204-661-8 |
| Molecular Formula | C4H8O2 |
| Molecular Weight | 88.11 |
| Exact Mass | 88.0524 |
| SMILES | C1COCCO1 |
| InChIKey | RYHBNJHYFVUHQT-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H8O2/c1-2-6-4-3-5-1/h1-4H2 |
| PubChem CID | 31275 |
| UN Number | UN1165 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 2932990090 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- EUH019 May form explosive peroxides
- EUH066 Repeated exposure may cause skin dryness or cracking
- H225 Highly flammable liquid and vapour
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H351 Suspected of causing cancer
Precautionary statements
- P201 Obtain special instructions before use
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,4-Diethylene dioxide
- 1,4-Dioxacyclohexane
- Di(ethylene oxide)
- Diethylene dioxide
- Diethylene ether
- Dioxan
- Dioxane
- p-Dioxane
- Tetrahydro-1,4-dioxin
- Tetrahydro-p-dioxin
Frequently asked questions
What is 1,4-Dioxane used for?
1,4-Dioxane is primarily used as a solvent and stabilizer in chemical manufacturing, particularly in the production of pharmaceuticals and polymers.
What is the chemical formula and molecular weight of 1,4-Dioxane?
The chemical formula is C4H8O2 and the molecular weight is 88.11 g/mol.
How should 1,4-Dioxane be stored?
It should be stored at ambient temperature, away from heat and ignition sources, in a tightly closed container.
What grade of 1,4-Dioxane does Molekula supply?
Molekula supplies 1,4-Dioxane in reagent grade, suitable for laboratory and industrial applications.
Can Molekula supply 1,4-Dioxane in bulk?
Yes, Molekula can supply 1,4-Dioxane in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with a 1,4-Dioxane order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.