Molekula
18-Crown-6-Ether
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
18-Crown-6-Ether is a macrocyclic polyether used primarily as a phase-transfer catalyst and ionophore, particularly for complexing alkali metal cations like potassium. It is commonly employed in organic synthesis and supramolecular chemistry. Available in powder form with a purity of ≥98%, it has a molecular weight of 264.32 g/mol, a CAS number of 17455-13-9, and is stable at ambient temperature. Molekula supplies 18-Crown-6-Ether 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.
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25 g — £38.70 per pack ex VAT · £46.44 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 | Colourless transparent solid |
| Water | ≤0.5% |
| Assay | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.0000667 mmHg |
Source: PubChem CID 28557 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 27395735 |
| CAS Number | 17455-13-9 |
| IUPAC Name | 1,4,7,10,13,16-hexaoxacyclooctadecane |
| EC Number | 241-473-5 |
| Molecular Formula | C12H24O6 |
| Molecular Weight | 264.32 |
| Exact Mass | 264.1573 |
| SMILES | C1COCCOCCOCCOCCOCCO1 |
| InChIKey | XEZNGIUYQVAUSS-UHFFFAOYSA-N |
| InChI | InChI=1S/C12H24O6/c1-2-14-5-6-16-9-10-18-12-11-17-8-7-15-4-3-13-1/h1-12H2 |
| PubChem CID | 28557 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29329990 |
| Tariff Code | 2932990090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H313 May be harmful in contact with skin
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, 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
- 1,4,7,10,13,16-Hexanoxacyclooctadecane
- 1,4,7,10,13,16-Hexaoxacyclooctadecane (18-Crown-6)
- 18-Crown-6
- 18-Crown-6, pkg of 25 g
- 18-Crownether-6
- Crown ether 18-crown-6
- Ethylene oxide cyclic hexamer
- hexaoxacyclo-octadecane
- O4B
Frequently asked questions
What is 18-Crown-6-Ether used for?
It is commonly used as a phase-transfer catalyst in organic synthesis and for complexing alkali metal ions, especially potassium.
What is the chemical formula and molecular weight of 18-Crown-6-Ether?
The formula is C12H24O6 with a molecular weight of 264.32 g/mol.
How should 18-Crown-6-Ether be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for 18-Crown-6-Ether?
Available in technical grade; specific higher grades may be available upon request.
Can Molekula supply 18-Crown-6-Ether in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with an order of 18-Crown-6-Ether?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.