20267-20-3

Basic information

• Product Name: ethylene dipivalate
• Synonyms: ethylene dipivalate;GLYCOL DIPIVALATE;Bis(2,2-dimethylpropanoic acid)1,2-ethanediyl ester;Ethylene glycol bis(2,2-dimethylpropionate);Einecs 243-660-7
• CAS NO: 20267-20-3
• Molecular Formula: C₁₂H₂₂O₄
• Molecular Weight: 230.30068
• EINECS: 243-660-7
• Mol File: 20267-20-3.mol

Chemical Properties

• Boiling Point: 271°Cat760mmHg
• Flash Point: 121.3°C
• Appearance: /
• Density: 0.985g/cm³
• Vapor Pressure: 0.00661mmHg at 25°C
• Refractive Index: 1.436
• CAS DataBase Reference: ethylene dipivalate(CAS DataBase Reference)
• NIST Chemistry Reference: ethylene dipivalate(20267-20-3)
• EPA Substance Registry System: ethylene dipivalate(20267-20-3)

Safety Data

• Hazardous Substances Data: 20267-20-3(Hazardous Substances Data)

Usage

InChI:InChI=1/C12H22O4/c1-11(2,3)9(13)15-7-8-16-10(14)12(4,5)6/h7-8H2,1-6H3

Upstream product

• 3282-30-2 pivaloyl chloride 
• 107-21-1 ethylene glycol 
• 75-98-9 Trimethylacetic acid 

Downstream Products

• 20267-19-0 2-hydroxyethyl pivalate 
• 75-98-9 Trimethylacetic acid 

Relevant articles and documents

Saturation vapor pressures and vaporization enthalpies of esters of ethylene glycol and lower carboxylic acids

Saturation vapor pressures and vaporization enthalpies of ethylene glycol and C1-C5 carboxylic acid disubstituted esters of normal and branched structures are determined by the transfer method in the tem-perature range of 295 to 327 K. Dependences of vaporization enthalpies versus the number of carbon atoms in a molecule and the retention indices are determined. An analysis of existing calculation schemes is given to help predict the vaporization enthalpy of the compounds under study.

A mild and efficient chemoselective protection of primary alcohols as pivaloyl esters using La(NO3)3·6H2O as a catalyst under solvent-free conditions

Primary alcohols are selectively and efficiently protected as their pivaloyl esters with pivaloyl chloride in the presence of catalytic amounts of La(NO3)3·6H2O at room temperature under solvent-free conditions in excellent yields. Copyright

Kinetics and quantitative structure-activity relationships for pseudomonas sp. Lipase-catalyzed hydrolysis of both monoesters and diesters of ethylene glycol

The goal of this work is to study kinetics and quantitative structure-activity relationships for steady states of Pseudomonas sp. lipase-catalyzed hydrolysis of both diesters and monoesters of ethylene glycol. Based on the steady-state kinetics of the enzyme-catalyzed hydrolysis of the diesters of ethylene glycol, the diesters and the monoesters react simultaneously as soon as monoester has started to build up in the reaction medium. In other words, the apparent Km values of the diesters are the Km values of the diesters (KmA) plus the Km values of the monoesters (KmB), and all Vmax values are about the same. Moreover, the pH-stat titration curve of the enzyme-catalyzed hydrolysis of the diesters of ethylene glycol is initially hyperbolic, then there is a sharp falloff in the hydrolysis rate. The abrupt stoppage of the reaction (relaxation stage) may be due to the existence of two phases in the reaction medium, that is, the product (ethylene glycol) and the substrates (the diesters of ethylene glycol) are not miscible. Furthermore, quantitative structure-activity relationships for varied acyl groups of mono- and diesters of ethylene glycol are studied. The fact that both pKmA and pK mB values are linearly correlated with the hydrophobicity constant (π) but not with the electronic substituent constants (σ*) indicates that the affinity of these substrates for the enzyme depends only on the hydrophobicitv of substrates. Copyright