Home >> Product >> Heterocycle series >> 12-Crown-4
- Product Name: 12-Crown-4
- Synonyms: Eoct;Ethylene oxide cyclic tetramer;1,4,7,10-TETRAOXYCYCLODODECANE;1,4,7,10-TETRAOXACYCLODODECANE;12-CROWN 4-ETHER
- CAS No.: 294-93-9
- Molecular Formula: C8H16O4
- Molecular Weight : 176.21
- Specification : 98%
- Place of Origin: China
- Appearance :
- Document : Download
Description of 12-Crown-4
| 12-Crown-4 Chemical Properties | |
| Melting point | 16 °C(lit.) |
| Boiling point | 61-70 °C0.5 mm Hg(lit.) |
| density | 1.089 g/mL at 25 °C(lit.) |
| refractive index | n |
| Fp | >230 °F |
| storage temp. | 2-8°C |
| form | Liquid After Melting |
| color | Clear colorless to slightly yellow |
| Water Solubility | MISCIBLE |
| Sensitive | Air Sensitive |
| BRN | 1363064 |
| CAS DataBase Reference | 294-93-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 12-Crown-4(294-93-9) |
| EPA Substance Registry System | 1,4,7,10-Tetraoxacyclododecane(294-93-9) |
| Safety Information | |
| Hazard Codes | T+,Xn,Xi |
| Risk Statements | 26-36/37/38-20/21/22 |
| Safety Statements | 28-36/37-45-36-26 |
| RIDADR | UN 2810 |
| WGK Germany | 3 |
| RTECS | XF0550000 |
| F | 3-9-23 |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | III |
| HS Code | 29329995 |
| 12-Crown-4 Usage And Synthesis | |
| Chemical Properties | clear colorless to slightly yellow liquid after |
| Uses | An aprotic "solvent" for alkali metals, the sodium solution is a strong reducing agent |
| Definition | ChEBI: A crown ether that is cyclododecane in which the carbon atoms at positions 1, 4, 7 and 10 have been replaced by oxygen atoms. |
| Purification Methods | The distilled crude product has to be recrystallised from pentane at -20o to remove acyclic material. It is then dried over P2O5. It complexes Li. [Anet et al. Acta Chem Scand 27 3395 1973, Beilstein 19/11 V 334.] |
| 12-Crown-4 Preparation Products And Raw materials | |
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