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294-93-9 structure, C8H16O4
12-crown-4
CAS No.: 294-93-9 Formula: C8H16O4 Molecular Weight: 176.21000
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294-93-9 structure, C8H16O4

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294-93-9 structure, C8H16O4

12-crown-4

CAS No.:

294-93-9

 Formula:

C8H16O4

 Molecular Weight: 176.21000
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Description

12-Crown-4, also called 1,4,7,10-tetraoxacyclododecane and lithium ionophore V, is a crown ether with the formula C8H16O4. It is a cyclic tetramer of ethylene oxide which is specific for the lithium cation. Its point group is S4. The dipole moment of 12-crown-4 varies in different solvent and under different temperature. Under 25°C, the dipole moment of 12-crown-4 was determined as 2.33 ± 0.03 D in cyclohexane and 2.46 ± 0.01 D in benzene.

Basic Info

Chemical Name

 12-crown-4

Synonyms

1,4,7,10-tetraoxa-cyclododecane; 1,4,7,10-Tetraoxacyclododecane; Ethylene oxide cyclic tetramer; EOCT; 12-Crown 4-Ether; 12-Crown-4; 12-Crown-4 ether; Expand

CAS No.

 294-93-9

Molecular Formula

 C8H16O4

Molecular Weight

 176.21000

PSA

 36.92000

LogP

 0.06640

Numbering system

MDL number MFCD00005103
EINECS number 206-036-5

Properties

Appearance & Physical State

 clear liquid

Density

 1.089

Boiling Point

 61-70ºC (0.5 mmHg)

Melting Point

 16ºC

Flash Point

 >110ºC

Refractive Index

 1.46-1.463

Water Solubility

 MISCIBLE

Stability

 Stable under normal temperatures and pressures.

Storage Condition

 Store in a cool, dry place. Store in a tightly closed container.

Vapor Pressure

 0.0269mmHg at 25°C

Safety Info

RTECS

 XF0550000

Hazard Class

 6.1

Safety Statements

 S26-S36

HS Code

 29329995

Packing Group

 III

WGK Germany

 3

RIDADR

 UN 2810

Risk Statements

 R20/21/22; R36/37/38

Hazard Codes

 Xn
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Precursor:
Ethylene glycol 1,2-Bis(2-chloroethoxy)ethane 2,2'-Dichlorodiethyl ether Diethylene glycol tetraethylene glycol
Product:
1-methyl-ortho-carborane 1-phenyl-ortho-carborane perfluoro-12-crown-4 ether 1,1,2,2-tetrafluoro-1-[1,1,2,2-tetrafluoro-2-(trifluoromethoxy)ethoxy]-2-(trifluoromethoxy)ethane 1,1,1,2,2-pentafluoro-2-(1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoro-2-(trifluoromethoxy)ethoxy)ethoxy)ethane 1,4-Dioxane diisocyanato(dimethyl)silane 2-(1,4,7,10-tetraoxacyclododec-2-yl)-1,4,7,10-tetraoxacyclododecane
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Compound Synonyms: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9

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