If you are making a new formula and are considering using Di-isodecyl Adipate (DIDA), or your current formulation utilizes DIDA, we would like to show you why you should make the switch to an exclusive C10 diester from BASF. Synative ES DPHA, by BASF, is an improvement over DIDA respecting critical features.
Synative ES DPHA is a diester of propylheptyl alcohol and adipic acid, [Di-(2-propylheptyl) Adipate] that imparts superior performance while maintaining the positive physical properties of DIDA, such as +100 Viscosity Index, very low pour point and high flash point.
Similar Physical Properties
| Synative ES DPHA | DIDA | |
|---|---|---|
| Viscosity @ 40° C, ASTM D 445 | 11.6 cSt | 14.2 cSt |
| Viscosity @ 100° C, ASTM D 445 | 3.0 cSt | 3.7 cSt |
| Viscosity Index, ASTM D 2270 | 123 | 144 |
| Pour Point, ASTM D 97 | – 75° C | – 57° C |
| Flash Point, ASTM D 92 | 223° C | 224° C |
Since these are both 10 carbon alcohol diesters of the same acid, they have the same molecular weight and similar physical properties. Therefore, they have some of the same benefits when used in formulation as a co-solvent ester. In addition to the physical properties listed above, Synative ES DPHA and DIDA have comparable compatibility with mineral oil & PAO’s and seal elastomers. However, despite their similarities, due to its more highly branched alcohol, Synative ES DPHA has superior performance advantages respecting, thermal oxidative stability, friction reduction, hydrolytic stability, and low temperature fluidity.
Thermal Oxidative Stability
HP-DSC oxidation peak temperatures (°C)
Synative ES DPHA shows improved thermal and oxidative stability
RPVOT time (min)
Synative ES DPHA shows improved thermal and oxidative stability
Frictional Property of Synative ES DPHA
→approx. 20% less friction than DIDA in MTM → potential for energy efficiency
Hydrolytic Stability
Swedish Standard SS-155181
Test Conditions:
- 90°C, 250 ml Oil and 25 ml Water
- Oil phase sampled after 120 hrs and 192 hrs
- Acid Value and Change in AV is determined
- Duplicate tests are run
RR36-13-030-1
| Time (Hr) | AV (mg KOH/g) | Increase in AV (mg KOH/g) |
|---|---|---|
| 0 | 0.07 | |
| 120 | 0.15 | 0.08 |
| 192 | 0.29 | 0.22 |
RR36-13-030-1, WDH
| Time (Hr) | AV (mg KOH/g) | Increase in AV (mg KOH/g) |
|---|---|---|
| 0 | 0.07 | |
| 120 | 0.18 | 0.11 |
| 192 | 0.30 | 0.23 |
Synative ES DPHA shows excellent hydrolytic stability
Low Temperature Fluidity
| DIDA | Synative ES DPHA | |
|---|---|---|
| Brookfield viscosity @ -40° C (Cp) ASTM D 2983 | 2,603 Cp | 1,578 Cp |
Synative ES DPHA provides an alternative to DIDA, and other similar diesters, that can improve key product performance aspects while preserving the desirable qualities with little, or no change to a formulation’s physical characteristics. Lastly, Synative ES DPHA meets the requirements to be classified as readily biodegradable according the OECD 301B test method.
Potential Applications
Industrial Gear Oils
Hydraulic Fluids
Greases
Metalworking Fluids
Engine Oils
Chain Lubricants
Bio-Eco Lubricants
Transportation Drive Line Lubricants
In Summary
Synative ES DPHA, by BASF, is a unique saturated diester of adipic acid that is a better cost-performance option compared to DIDA and similar diesters. It is a commercially available, globally registered, co-solvent/base oil ester that offers:
- Excellent thermal and oxidative stability
- Superior low temperature properties
- Friction reduction
- Additive solubility
- Seal elastomer compatibility
- Hydrolytic stability
- Biodegradability
- Compatible with mineral oils, PAO’s and other base oils
Chris Sementa, Technical Director – Monson