Dibasic Esters General Information The dibasic esters (DBE) are mixtures of methyl esters of adipic, glutaric, and succinic acid. DBE may be used at 100 percent strength or mixed with other chemicals. One additive is NMP (n-methyl pyrollidone). DBE can be fractionated into other mixtures and pure components to meet market demands. DBE is commonly used as a paint stripper. It has been used to clean paint guns and lines. DBE-2 and DBE-3 are the solvents of choice. DBE is used as the active component in paint-removing hand cleaners. DBE and DBE-2 are most often used. DBE is used, usually in blends with other solvents, as a replacement for glycol ethers. DBE has a low vapor pressure (0.1 torr or less), so air emissions are likely to be low. It has low cost and excellent solvency. It dissolves many resins and solubilizes many polar soils. DBE may be biodegradable and can be recycled using a vacuum still. DBE is stable at normal temperature, humidity, and pH. DBE can be purchased in both nonaqueous and water-based strippers. DuPont recommends blends of 70% to 80% DBE and 30% to 20% NMP as more effective than either solvent alone. It is also economical because the DBE is cheaper to use than NMP. DBE is a recommended replacement for methylene chloride. If the OSHA-proposed reduction in the threshold limit value (TLV) for methylene chloride from 50 to 25 ppm occurs, the market for DBEs will grow. Isobutyl diester is stable under normal temperature and humidity when stored and handled in mild steel or aluminum containers or equipment. State Information | Glossary | Conversion Checklist | Comments Home | Process Advisor | Alternatives | Links | Search All SAGE material, Copyright© 1992, Research Triangle Institute Last Update: 14 March 1995 sage@rti.org http://clean.rti.org/alt.cfm?id=dbe&cat=gi