Molekula
1,4-Dioxane
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · 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
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.
-
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
-
Flammable
GHS02
-
Health Hazard
GHS07
-
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.
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.