Bis(2-Ethylhexyl) Maleate CAS 142-16-5
Factory wholesale Bis(2-Ethylhexyl) Maleate CAS 142-16-5
- Appearance:Liquid
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: Bis(2-Ethylhexyl) Maleate
CAS: 142-16-5
MOQ: 1KG
Directory Guidance on Bis(2-Ethylhexyl) Maleate
Chemical Structure
Basic Info:
| Melting point | -50°C |
| Boiling point | 208-209°C 10mm |
| density | 0.944 g/mL at 25 °C(lit.) |
| Pour Point | -50 |
| vapor pressure | 0Pa at 20℃ |
| refractive index | n20/D 1.455(lit.) |
Product Introduction:
Bis(2-Ethylhexyl) Maleate (Di-2-ethylhexyl maleate) is an important organic compound with the formula C20H36O4, molecular weight 340.5 and CAS number 142-16-5. The substance usually appears as a colorless to yellowish transparent liquid at room temperature, with low viscosity and low volatility, a density of about 0.944 g/mL (25 ° C), a melting point as low as -50 ° C, and a boiling point between 208-209 ° C (10mmHg pressure). From the point of view of chemical structure, Bis(2-Ethylhexyl) Maleate belongs to the double ester derivative of maleic acid, the molecule contains two 2-ethylhexyl substituents, this structure gives it good solubility, soluble in chloroform, ethyl acetate and other organic solvents, but the solubility in water is very low (only 18μg/L at 20℃). It has a refractive index of about 1.455 (20 ° C) and a flash point of 230 ° F (about 110 ° C), showing high thermal stability.
In terms of safety, Bis(2-Ethylhexyl) Maleate is classified as low toxic with an oral LD50 of 140,000 mg/kg in rats and a low dermal contact toxicity (rabbit skin LD50 of 15,000 mg/kg). However, pay attention to its irritation to the eyes and skin, rinse immediately after contact and seek medical attention. Long-term exposure may pose health risks, so avoid contact with oxidants when storing and keep the environment ventilated and dry. Bis(2-Ethylhexyl) Maleate is potentially toxic to aquatic organisms and has an environmental risk identifier (WGK Germany) of level 1, indicating that strict measures should be taken to prevent release into the ecosystem.
The chemical properties of Bis (2-Ethylhexyl) Maleate are stable, and the diester structure in the molecule allows it to maintain functional integrity in high temperature and acid-base environments. This stability is due to the steric hindrance effect of the ester group and the balance of intermolecular forces, making it excellent in high-temperature scenarios such as polymer processing. At the same time, the low volatility of Bis(2-Ethylhexyl) Maleate reduces the risk of vapor release during production and use, which meets the requirements of volatile organic compounds (VOCs) control in modern industry. However, its near-zero vapor pressure also means that long-term exposure risks due to liquid leakage must be prevented in a confined environment.
Nature and Specifications:
| Item | Specification |
| Product Name | Bis(2-Ethylhexyl) Maleate |
| CAS No. | 142-16-5 |
| Appearance | Liquid |
| Shelf Life | 2 years |
| Packing | As your requirements |
| Fp | >230 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Chloroform (Sparingly), Ethyl Acetate(Slightly),Methanol (Slightly) |
| form | Liquid |
| color | Colourless |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
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- Free Sample
- Factory audit
Bis(2-Ethylhexyl) Maleate is an invaluable chemical raw material in the polymer industry, where its versatility makes an impactful contribution. Plastics and synthetic resins rely heavily on crosslinkers and plasticizers as an aid to flexibility, wear resistance, and chemical resistance – improving these aspects through physical entanglement or chemical bonding with polymer chains. Bis(2-Ethylhexyl) Maleate can effectively lower the glass transition temperature of PVC cable materials while simultaneously improving low temperature brittleness without altering electrical insulation properties – characteristics which have made it popularly used as wire and cable cladding materials, particularly those requiring cold resistance and age resistance properties. This material has become one of the primary ingredients in making special cables such as cold and age resistance cables.
Bis(2-Ethylhexyl) Maleate’s excellent film formation and compatibility makes it a valuable additive to acrylic resin, polyurethane and other systems in the coating industry. Solvent-based coatings may utilize it to regulate leveling and reduce orange peel phenomenon while water-based systems utilize its hydrophobic groups that increase water resistance of coating films. Furthermore, its biester structure forms weak coordination effects with metal substrates to enhance adhesion of coating film while its use as an active diluent reduces viscosity without impacting curing efficiency.
Bis(2-Ethylhexyl) Maleate has quickly emerged as an essential material in medical materials, thanks to its biocompatibility and chemical inertia properties. Used as dental repair materials that maintain strength while avoiding tissue irritation due to the precipitation of small molecules, or added as flexible instruments like medical catheters where proper amounts can balance elasticity with tear resistance; recent studies also reveal its ester group plays a part in controlled degradation processes, offering new insight for creating environmentally responsive polymers.
As part of an effort to produce environmentally-friendly materials, Bis(2-Ethylhexyl) Maleate as a bioplasticizer has received much scrutiny. Traditional phthalate plasticizers are restricted due to environmental hormone issues; however, Bis(2-Ethylhexyl) Maleate stands out due to its ester group structure which cannot easily be hydrolyzed, and boasts superior toxicological data compared with comparable products.
The cosmetics industry focuses on its application in makeup removal product formulations. As a polar oil component, Bis (2-Ethylhexyl) Maleate has excellent solubility for wax and pigments in cosmetics, while its high molecular weight makes it difficult to penetrate the skin barrier, reducing the risk of sensitization. Compared to traditional mineral oils, Bis (2-Ethylhexyl) Maleate provides a lighter and more moisturized skin sensation, without producing a thick and greasy feeling, which meets the current market demand for “integrated unloading and nourishment” products. Some high-end makeup remover oils achieve a balance between cleansing power and skincare effect by compounding this product with other vegetable oils. This technological path plays an important role in driving the 9.43% growth of makeup remover categories on Taobao platforms in 2024.
The core competitiveness of Bis (2-Ethylhexyl) Maleate is first reflected in its excellent chemical stability. The symmetrical ester structure and steric hindrance effect of long-chain alkyl groups in the molecule enable it to maintain molecular integrity in high temperature (above 200 ℃), strong acid (pH<2), or strong base (pH>12) environments. This characteristic ensures that Bis (2-Ethylhexyl) Maleate does not undergo significant decomposition or volatilization during plastic extrusion, coating baking, and other processes that require high-temperature processing, ensuring the long-lasting stability of the end product performance. Compared to ortho benzene plasticizers, its thermal weight loss temperature has increased by about 30-50 ℃, which directly extends the service life of the material.
Low volatility is another significant advantage of Bis(2-Ethylhexyl) Maleate. Its vapor pressure is nearly zero (0Pa at 20 ° C), much lower than the traditional plasticizer DOP (about 1.3Pa at 20 ° C). This feature not only reduces the risk of air pollution on the production floor, but also effectively inhibits “fogging” in closed applications such as automotive interiors. The experimental data show that when Bis(2-Ethylhexyl) Maleate is used for PVC material in automotive instrument panel, the volatilification loss of BIS (2-ethylhexyl) maleate in 85℃ accelerated aging test is only 1/5 of DOP, which provides key technical support for passing the in-vehicle air quality certification.
Environmental friendliness is an important feature that distinguishes Bis(2-Ethylhexyl) Maleate from traditional chemical raw materials. Although it is necessary to prevent toxicity to aquatic organisms, the biodegradation rate of Bis(2-Ethylhexyl) Maleate under normal use conditions can reach more than 60% (28-day standard test) and will not produce persistent organic pollutants. The EU REACH regulation classifies it as a substance requiring routine management rather than a substance of high concern (SVHC), which clears policy barriers for its global trade. In the current trend of ecological design concepts, this balance between performance and environmental protection makes it one of the preferred alternatives for green chemistry.
The multifunctional adaptability has expanded the market boundary of Bis (2-Ethylhexyl) Maleate. As a compound with plasticizing, crosslinking, and lubricating functions, Bis (2-Ethylhexyl) Maleate can adjust its mechanism of action according to different formulation requirements. It mainly plays a plasticizing role in PVC cable materials, and becomes an active diluent in UV adhesives. In some special coatings, it can even serve as a leveling agent and adhesion promoter. This “one dose, multiple uses” feature simplifies the formula system, helps production enterprises reduce the types of raw material inventory, and is particularly suitable for small batch customized production that requires rapid response to the market.
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Related References:
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