2-Ethylhexanol (2-EH)

As an ester of acrylic acid, 2-ethylhexyl acrylate (2-EHA) consists of two components that are chemically bonded through an esterification process. The alcoholic part of its molecules is derived from the branched alcohol ethylhexanol, whose functional hydroxyl group is replaced during production by an ester group that connects it to the acrylic acid residue. Due to the remaining double bond between two carbon atoms in the acrylate group and the central ester group, 2-ethylhexyl acrylate has two reactive sites. This makes the compound suitable as a monomer for polymerization processes.

The substance exists in two mirror-symmetrical forms, which differ in the spatial arrangement of their components. We supply 2-ethylhexyl acrylate as a racemic mixture containing both forms in equal proportions.

2-Ethylhexyl acrylate is a colorless to slightly yellowish liquid that is very poorly soluble in water. Due to its lower density, it floats on top when in contact with water. 2-Ethylhexyl acrylate only transitions to a solid state at very low temperatures, around -90 °C, and boils at 214 °C. The compound is only very slightly volatile and has a pleasant, sweet odor.

2-Ethylhexyl acrylate (2-EHA) is chemically unstable and tends to spontaneously polymerize and decompose without stabilizing additives. This process can also be triggered or intensified by heat, exposure to light, impurities, and contact with peroxides. The substance also reacts violently with strong oxidizing agents, accompanied by intense heat generation.

2-Ethylhexyl acrylate is a flammable substance, but under normal conditions it is considered difficult to ignite. However, its flammability increases significantly with rising temperatures. The vapors of the compound can form easily flammable and explosive mixtures with ambient air. They are denser than air and can accumulate near the ground, spreading unnoticed. This creates the potential for hazardous remote ignition. Therefore, when storing and handling 2-ethylhexyl acrylate, a safe distance from ignition sources such as electrical devices, electrostatic discharges, sparks from grinding and welding work, hot surfaces, and open flames must be maintained. Combustion of the substance produces toxic and irritating gases, including potentially dangerous amounts of carbon monoxide.

The compound is irritating and harmful to the skin. When handling 2-ethylhexyl acrylate (2-EHA), appropriate occupational safety measures must be observed. Direct contact can cause redness, irritation, and chemical burns to the skin. Long-term sensitization and allergic reactions are possible. In the eyes, 2-ethylhexyl acrylate can cause redness and temporary swelling of the conjunctiva and cornea, potentially leading to temporary visual impairment. Affected areas of the body should be thoroughly rinsed with water. For the skin, washing with polyethylene glycol 400 is also recommended. Depending on the extent of exposure, medical treatment may be necessary.

Inhalation of the compound’s vapors and aerosols can irritate the upper respiratory tract, and at higher concentrations, the lungs as well. In cases of severe exposure, pulmonary edema may occur. Ingesting 2-ethylhexyl acrylate can cause irritation of the mucous membranes and stomach, as well as gastrointestinal symptoms such as stomach pain, nausea, vomiting, and diarrhea. In addition to thoroughly rinsing the mouth and drinking plenty of water, medical evaluation is advised.

2-ethylhexyl acrylate is classified as slightly hazardous to water. Its release into bodies of water, soil, or the sewage system must be avoided. Any significant release into the environment must be reported to the relevant authorities. The substance is not subject to specific transport regulations.