18-Crown-6 CAS 17455-13-9 for Complexation and Catalysis

Product Description:

Product Name: 18-Crown-6 CAS NO: 17455-13-9

Synonyms:

1,4,7,10,13,16-Hexaoxacyclooctadecane;

18-Crown e-ther-6;

Chemical & Physical Properties:

Appearance: Colorless crystals

Assay :≥99.00%

Density: 0.995 g/cm3

Boiling Point: 395.8℃ at 760 mmHg

Melting Point: 36-40℃

Flash Point: >110℃

Refractive Index: 1.4577 (50℃)

Water Solubility: SOLUBLE

Stability: Stable. Incompatible with strong acids, strong oxidizing agents.

Storage Condition: Store at 0-5℃

Vapor Pressure: 4.09E-06mmHg at 25℃

Safety Information:

RTECS: MP4500000

Hazard Class: 6.1(b)

Safety Statements: S26-S39

HS Code: 2932999099

WGK Germany: 3

Packing Group: III

RIDADR: UN 2811

Risk Statements: R20/22; R36

Hazard Code: Xn

Symbol: GHS07

Signal Word: Warning

Hazard Declaration: H302

Caution Statement: P301 + P312 + P330

18-Crown-6 is an organic compound with the formula [C2H4O]6 and the IUPAC name of 1,4,7,10,13,16-hexaoxacyclooctadecane. It is a white, hygroscopic crystalline solid with a low melting point. Like other crown ethers, 18-crown-6 functions as a ligand for some metal cations with a particular affinity for potassium cations (binding constant in methanol: 106M−1). The point group of 18-crown-6 is S6. The dipole moment of 18-crown-6 varies in different solvent and under different temperature. Under 25°C, the dipole moment of 18-crown-6 is 2.76 ± 0.06 D in cyclohexane and 2.73 ± 0.02 in benzene. The synthesis of the crown ethers led to the awarding of the Nobel Prize in Chemistry to Charles J. Pedersen.

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