Overview
Dibasic Ester (DBE) is a solvent mixture composed of dimethyl esters of dicarboxylic acids, primarily dimethyl adipate, dimethyl glutarate, and dimethyl succinate. Developed as a safer alternative to traditional solvents, DBE offers a unique combination of high solvency power and low environmental impact. Its balanced evaporation rate and compatibility with numerous resins make it valuable across multiple industries. DBE is classified as a slow-evaporating solvent, which contributes to its effectiveness in applications requiring extended working time. The blend ratio of its components can be adjusted to tailor performance characteristics for specific uses, providing flexibility in formulation.
Physical and Chemical Properties
DBE exhibits a density of approximately 1.09 g/cm³ and a boiling range between 196-225°C, varying slightly based on the exact composition of the mixture. The solvent is colorless to slightly yellow with a mild, characteristic ester odor. Its viscosity is relatively low, facilitating easy handling and application. Chemically, DBE demonstrates excellent stability under normal storage conditions. It shows high solvency for resins, oils, and many polymers while being sparingly soluble in water. The slow evaporation rate reduces VOC emissions compared to faster solvents, aligning with modern environmental regulations.
Main Applications
In the coatings industry, DBE serves as a key component in high-performance paints, providing improved flow and leveling properties. Its ability to dissolve cellulose nitrate, acrylic resins, and polyurethanes makes it particularly valuable in automotive and industrial coatings. Beyond coatings, DBE finds extensive use in industrial cleaning formulations where its solvency power effectively removes grease, tar, and ink residues. The electronics industry utilizes DBE for flux removal, while composite manufacturers employ it as a plasticizer and processing aid in resin systems.
Safety and Storage
While DBE is considered less hazardous than many conventional solvents, proper safety measures should still be observed. The material may cause mild eye and skin irritation upon prolonged exposure, necessitating the use of protective equipment including gloves and goggles. Storage recommendations include keeping containers tightly closed in a cool, well-ventilated area away from heat sources and oxidizing agents. Secondary containment is advised to prevent environmental contamination in case of spills. The flash point of approximately 100°C (closed cup) indicates moderate flammability requiring standard precautions against fire hazards.
B2B Procurement Guide
When procuring DBE for industrial applications, buyers should first verify the specific composition requirements for their intended use. Different ratios of the constituent esters may be preferred for particular applications. Technical data sheets and certificates of analysis should be requested from suppliers to confirm product specifications. Bulk purchasing typically offers cost advantages, with prices commonly ranging between $2.5-$4.5 per kilogram depending on quantity and purity. Buyers should evaluate suppliers based on consistent quality, reliable logistics, and compliance with relevant industry standards. For international shipments, proper documentation including SDS and transportation classifications should be confirmed.
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