Molekula
15-Crown-5
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
15-Crown-5 is a cyclic ether used as a phase-transfer catalyst and ionophore in organic synthesis, particularly for complexing alkali metal ions like sodium. It has a molecular formula of C10H20O5, a molecular weight of 220.26 g/mol, and is stored at ambient temperature. Its CAS number is 33100-27-5. Signal word: Warning. Molekula supplies 15-Crown-5 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
On backorder — expected to ship by 26 November 2026
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.
-
25 g — £74.80 per pack ex VAT · £89.76 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 to light yellow transparent liquid |
| Purity (GC) | ≥98% |
| Water (KF) | ≤0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 110 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.00144 mmHg |
Source: PubChem CID 36336 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 10920590 |
| CAS Number | 33100-27-5 |
| IUPAC Name | 1,4,7,10,13-pentaoxacyclopentadecane |
| EC Number | 251-379-6 |
| Molecular Formula | C10H20O5 |
| Molecular Weight | 220.26 |
| Exact Mass | 220.1311 |
| SMILES | C1COCCOCCOCCOCCO1 |
| InChIKey | VFTFKUDGYRBSAL-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H20O5/c1-2-12-5-6-14-9-10-15-8-7-13-4-3-11-1/h1-10H2 |
| PubChem CID | 36336 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29329990 |
| Tariff Code | 2932990028 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye 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
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in Dutch, English, French, German, Italian, Russian, 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-pentaoxacyclopentadecane
- 1,4,10,13-Pentaoxacyclopentadecane
- 1,4,7,10,13-Pentaoxacyclopentadecane; 15-Crown-5 Ether; 15C5; Crown Ether O 15
- 15-Crown-5 ether
- 15-Crown-5(1,4,7,10,13-Pentaoxacyclopentadecane)
- EYO
Frequently asked questions
What is 15-Crown-5 used for?
15-Crown-5 is commonly used as a phase-transfer catalyst and for complexing alkali metal ions, particularly sodium, in organic synthesis.
What is the chemical formula and molecular weight of 15-Crown-5?
The formula is C10H20O5 with a molecular weight of 220.26 g/mol.
How should 15-Crown-5 be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of 15-Crown-5 is available?
Molekula supplies 15-Crown-5 in technical grade; custom grades available upon request.
Can Molekula supply 15-Crown-5 in bulk?
Yes, Molekula can supply 15-Crown-5 in bulk quantities; please contact sales for pricing and availability.
What documentation comes with my order of 15-Crown-5?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation available upon request.
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.