Dibutyl oxalate
Description
Dibutyl oxalate (CAS 2050-60-4), also known as butyl oxalate, is a dibutyl ester of oxalic acid used industrially as a plasticizer and specialty solvent. It functions as a processing aid in polymer systems and a carrier in formulations.
This chemical is utilized where controlled solvency and compatibility with organic substrates are required. In plastics and polymer processing, it acts as a plasticizer to improve flexibility and workability in resin systems.
It is particularly effective where ester-type compatibility is needed for specific manufacturing goals. Lubricant and metalworking formulators incorporate it as a functional additive or carrier fluid in cutting fluids.
The compound is also found in specialty lubricant blends and serves as a solvent or co-solvent in coating formulations. Controlled evaporation and resin compatibility are critical to the final film performance.
Its ester character makes it a candidate for use in polymer synthesis as a reactive intermediate or processing solvent. This versatility allows for broad application across various chemical manufacturing sectors.
Dibutyl oxalate is supplied as a clear liquid in standard industrial packaging, including drums and intermediate bulk containers. Technical grade is the primary commercial specification available.
Purity levels typically range from 98% to 99%+, with high-purity grades available for more demanding applications. These specifications ensure reliability for industrial and polymer formulation requirements.
Physical Properties
| Melting Point | -30.5 °C |
| Boiling Point | 241 °C |
| Density | 1.047 g/cm³ @ Temp: 20 °C |
| Flash Point | 228 °F |
| Appearance | clear colourless liquid |
| Color | Colorless to Almost colorless |
| Odor | Faint, nondescript odor between fruity and wincy, rather pleasant but weak. |
| Form | clear liquid |
| Water Solubility | Practically insoluble in water |
| Refractive Index | n 20/D 1.423(lit.) |
| Log P | 2.742 (est) |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29171190 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 3 |
Documentation
Other Names
Di-n-butyl oxalate|Butyl oxalate|Ethanedioic acid, dibutyl ester|Butyl ethanedioate|Oxalic acid, dibutyl ester|dibutyl ethanedioate|Ethanedioic acid, 1,2-dibutyl ester|S18C168OWC
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