Dibenzo-24-crown-8
Synonym(s):2,3,14,15-Dibenzo-1,4,7,10,13,16,19,22-octaoxacyclotetracosa-2,14-diene;6,7,9,10,12,13,20,21,23,24,26,27-Dodecahydrodibenz[b,n]-1,4,7,10,13,16,19,22-octaoxacyclotetracosane;Crown ether/Dibenzo-24-crown-8;Dibenzo-24-crown-8, 1,4,7,10,17,20,23,26-Octaoxa[10.10]orthocyclophane
- CAS NO.：14174-09-5
- Empirical Formula: C24H32O8
- Molecular Weight: 448.51
- MDL number: MFCD00005101
- EINECS: 238-027-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:19:24
What is Dibenzo-24-crown-8?
Chemical properties
white powder
Purification Methods
Recrystallise it from EtOH, and dry in a vacuum at 60o over P2O5 for 16hours. [Delville et al. J Am Chem Soc 109 7293 1987, V.gtle ed. Top Corr Chem (Host Guest Complex Chemistry) 98 1981.]
Properties of Dibenzo-24-crown-8
| Melting point: | 103-105 °C(lit.) |
| Boiling point: | 517.23°C (rough estimate) |
| Density | 1.1606 (rough estimate) |
| refractive index | 1.5500 (estimate) |
| storage temp. | Store below +30°C. |
| solubility | almost transparency in hot Methanol |
| form | crystal |
| color | white |
| Sensitive | air sensitive |
| BRN | 1693744 |
| CAS DataBase Reference | 14174-09-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Tetracosamethylcyclododecasiloxane(14174-09-5) |
Safety information for Dibenzo-24-crown-8
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for Dibenzo-24-crown-8
| InChIKey | UNTITLLXXOKDTB-UHFFFAOYSA-N |
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