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18-Crown-6

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18-Crown-6 Basic information

Product Name:
18-Crown-6
Synonyms:
  • 1,4,7,10,13,16-HEXAOXACYCLOOCTADECANE
  • 18-CROWN 6-ETHER
  • 18-CROWN-6
  • HEXAOXACYCLOOCTADECANE
  • CROWN-18-5-ETHER
  • CROWN ETHER/18-CROWN-6
  • AKOS BBS-00004361
  • JACS-17455-13-9
CAS:
17455-13-9
MF:
C12H24O6
MW:
264.32
EINECS:
241-473-5
Product Categories:
  • crown ether
  • Miscellaneous Reagents
  • API intermediates
  • Crown Ethers
  • Functional Materials
  • Macrocycles for Host-Guest Chemistry
  • catalyst
Mol File:
17455-13-9.mol
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18-Crown-6 Chemical Properties

Melting point:
42-45 °C(lit.)
Boiling point:
116°C 0,2mm
Density 
1,175 g/cm3
refractive index 
1.4580 (estimate)
Flash point:
>230 °F
storage temp. 
Store below +30°C.
form 
Crystals or Crystalline Mass or Liquid
color 
White or clear colorless
Water Solubility 
SOLUBLE
Sensitive 
Hygroscopic
Merck 
14,2602
BRN 
1619616
Stability:
Stable. Incompatible with strong acids, strong oxidizing agents.
InChIKey
XEZNGIUYQVAUSS-UHFFFAOYSA-N
CAS DataBase Reference
17455-13-9(CAS DataBase Reference)
NIST Chemistry Reference
1,4,7,10,13,16-Hexaoxacyclooctadecane(17455-13-9)
EPA Substance Registry System
1,4,7,10,13,16-Hexaoxacyclooctadecane (17455-13-9)
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Safety Information

Hazard Codes 
Xn,Xi
Risk Statements 
22-36/37/38-36-20/22-20/21/22
Safety Statements 
26-36-39
RIDADR 
2811
WGK Germany 
3
RTECS 
MP4500000
10
TSCA 
Yes
HazardClass 
6.1(b)
PackingGroup 
III
HS Code 
29329995
Toxicity
LD50 orally in Rabbit: 525 mg/kg LD50 dermal Rabbit 3888 mg/kg

MSDS

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18-Crown-6 Usage And Synthesis

Chemical Properties

slightly yellow solid

Uses

A useful phase transfer catalyst.

Synthesis Reference(s)

The Journal of Organic Chemistry, 39, p. 2445, 1974 DOI: 10.1021/jo00930a037

Purification Methods

Recrystallise it from acetonitrile and dry it in a vacuum. Purify it also by precipitating the 18-crown-6/nitromethane 1:2 complex with Et2O/nitromethane (10:1 mixture). The complex is decomposed in vacuum whereby 18-crown-6 distils off under the reduced pressure. [Beilstein 19/12 V 601.]

18-Crown-6 Supplier

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