Molecular model of 1,1-Diethoxyethane 1,1-Dietoxietano
Formula: C 6 H 14 O 2
Molecular mass: 118.20
Melting point: -100ºC
Boiling point: 102.7 ºC
Comment: Flammable liquid, sensitive to light, heat and moisture.

Molecular model of 18-crown-6 potassium ether Eter 18-corona-6
Formula: C 12 H 24 O 6
Molecular mass: 264,318
Melting point: 39.5ºC
Boiling point: ------
Comments : 18-Crown-6 Ether is an organic compound with the formula C 12 H 24 O 6 . The IUPAC name is 1,4,7,10,13,16-hexaoxacyclooctadecane. The crown ethers coordinate with cations in their central cavity. 18-crown-6 has a special affinity for potassium ions.