Dioctyl maleate
CAS 142-16-5
EC 205-524-5
Formula C20H36O4
MW 340.5 g/mol
Monomers & Building Blocks Plastics & PolymersCoatings, Adhesives, Sealants & ElastomersPrinting & Packaging Plasticizer & SoftenerPolymerization InitiationSolvent & Carrier
Description
Dioctyl maleate (DOM), also known as di-2-ethylhexyl maleate or bis(2-ethylhexyl) maleate, is an unsaturated diester produced by esterifying maleic acid with 2-ethylhexanol. It carries no E-code designation and is registered under CAS 142-16-5 and EC 205-524-5.
In polymer and coatings production, DOM functions as a reactive plasticizer and comonomer: its maleate double bond participates directly in free-radical polymerization, allowing it to become chemically bound into the polymer matrix rather than migrating over time. In adhesive and sealant formulations it also acts as a reactive diluent, reducing viscosity while contributing to crosslink density upon cure.
DOM is supplied as a liquid and falls under REACH registration requirements for the European market. It is classified under HS code 29171900 for customs purposes. Buyers should confirm grade specifications and available pack sizes directly with the supplier, as these vary by production batch and regional stock.
In polymer and coatings production, DOM functions as a reactive plasticizer and comonomer: its maleate double bond participates directly in free-radical polymerization, allowing it to become chemically bound into the polymer matrix rather than migrating over time. In adhesive and sealant formulations it also acts as a reactive diluent, reducing viscosity while contributing to crosslink density upon cure.
DOM is supplied as a liquid and falls under REACH registration requirements for the European market. It is classified under HS code 29171900 for customs purposes. Buyers should confirm grade specifications and available pack sizes directly with the supplier, as these vary by production batch and regional stock.
Physical Properties
| Melting Point | -60 °C |
| Boiling Point | 164 °C @ Press: 10 Torr |
| Density | 0.9436 g/cm³ |
| Flash Point | >230 °F |
| Color | Colourless |
| Form | Liquid |
| Water Solubility | 18μg/L at 20℃ |
| Vapor Pressure | 0Pa at 20℃ |
| Refractive Index | n 20/D 1.455(lit.) |
| Log P | 7.24 at 25℃ |
Safety & Handling (Learn More)
Warning GHS07 GHS08 GHS09
H
H315H317H319H320H373H400H401H410H411
P
P260P261P264P272P273P280P319P321P391P501P264+P265P302+P352P332+P317P333+P317P337+P317P362+P364P305+P351+P338
Trade & Regulatory
| HS Code | 29171900 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 1 |
Other Names
Bis(2-Ethylhexyl) (Z)-but-2-enedioatediethylhexyl maleatedi-2-ethylhexyl maleatebis(2-ethylhexyl) maleateDOMCeraphyl 45Activemol DOM-R
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