925-05-3

Basic information

• Product Name: isobutyl hydrogen maleate
• Synonyms: isobutyl hydrogen maleate;2-Butenedioic acid (2Z)-, mono(2-methylpropyl) ester;(Z)-2-Butenedioic acid 1-isobutyl ester;Maleic acid 1-isobutyl ester;2-Butenedioic acid (2Z)-, 1-(2-methylpropyl) ester;Einecs 213-112-1;Maleic acid, monoisobutyl ester
• CAS NO: 925-05-3
• Molecular Formula: C₈H₁₂O₄
• Molecular Weight: 190.19376
• EINECS: 213-112-1
• Mol File: 925-05-3.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 281.4°C at 760 mmHg
• Flash Point: 110°C
• Appearance: /
• Density: 1.127g/cm³
• Vapor Pressure: 0.000944mmHg at 25°C
• Refractive Index: 1.468
• CAS DataBase Reference: isobutyl hydrogen maleate(CAS DataBase Reference)
• NIST Chemistry Reference: isobutyl hydrogen maleate(925-05-3)
• EPA Substance Registry System: isobutyl hydrogen maleate(925-05-3)

Safety Data

• Hazardous Substances Data: 925-05-3(Hazardous Substances Data)

Usage

InChI:InChI=1/C8H12O4/c1-6(2)5-12-8(11)4-3-7(9)10/h3-4,6H,5H2,1-2H3,(H,9,10)/b4-3-

Upstream product

• 108-31-6 maleic anhydride 
• 78-83-1 2-methyl-propan-1-ol 
• 108-30-5 succinic acid anhydride 

Relevant articles and documents

Synthesis of α,β-unsaturated esters of perfluoropolyalkylethers (PFPAEs) based on hexafluoropropylene oxide units for photopolymerization

α,β-unsaturated esters are usually synthesized for polymer applications. However, the addition of maleate (cis-configuration) to a fluorinated moiety is challenging due to its potential isomerization during esterification. Various synthetic routes were attempted and led to very low conversion or side-products. The immiscibility of both reagents combined with an easy isomerization or attack on the double bond were potential explanations. In this paper, the synthesis of maleates oligo(hexafluoropropylene oxide) is reported by Steglich esterification and the reaction conditions are discussed depending on the molecular weight of the fluorinated moieties. After UV-curing, hydrophobic polymers were obtained by copolymerization with vinyl ethers by electron acceptor-donor systems.