Related Experiment Video
Updated: Aug 4, 2026

Characteristics of Precipitation-formed Polyethylene Glycol Microgels Are Controlled by Molecular Weight of Reactants
Published on: December 23, 2013
Solubility and polarity parameters of polyoxyethylene glycol dialkyl ethers
J Szymanowski1, A Sobzyńska, A Voelkel
1Technical University of Poznań, Institute of Chemical Technology and Engineering, Poland.
Abstract:
Solubility parameters were estimated for model individual polyoxyethylene glycol dialkyl ethers and correlated with polarity parameters determined by gas chromatography. The effects of the length of the polyoxyethylene chain and of the terminal alkyl groups on the values of the parameters investigated and on the obtained relationships are discussed. It was found that polarity parameters can be estimated from the total solubility parameter with relatively low errors (approximately 1% for the retention index of ethanol and methanol and for the polarity index of ethanol). The polarity index of methanol and the relative retention of alcohols can be estimated with errors of approximately 3-4%. Using the total solubility parameter, polyoxyethylene glycol dialkyl ethers can be arranged in the same order of increasing polarity as in the case of polarity parameters determined by gas chromatography.
More Related Videos
10:53Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
Published on: October 10, 2016
07:05Microwave-Assisted Extraction of Phenolic Compounds and Antioxidants for Cosmetic Applications Using Polyol-Based Technology
Published on: August 23, 2024
Related Concept Videos
Molecular Shape and Polarity
Solubility
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
Physical Properties of Ethers
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
Physical Properties of Alcohols and Phenols
Alcohols possess a higher boiling point than aliphatic hydrocarbons of similar...
Surface Active Agents
Factors Affecting Dissolution: Drug pKa, Lipophilicity and GI pH
A drug's pKa and the pH of the gastrointestinal (GI) tract play crucial roles in drug...